deps: update dependency com.google.cloud:google-cloud-bigtable to v2.6.0 (#1892)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-bigtable](https://togithub.com/googleapis/java-bigtable) | `2.5.3` -> `2.6.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable/2.6.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable/2.6.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable/2.6.0/compatibility-slim/2.5.3)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable/2.6.0/confidence-slim/2.5.3)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-bigtable</summary>

### [`v2.6.0`](https://togithub.com/googleapis/java-bigtable/blob/HEAD/CHANGELOG.md#&#8203;260-httpsgithubcomgoogleapisjava-bigtablecomparev253v260-2022-03-03)

[Compare Source](https://togithub.com/googleapis/java-bigtable/compare/v2.5.3...v2.6.0)

##### Features

-   add WarmAndPing request for channel priming ([#&#8203;1178](https://togithub.com/googleapis/java-bigtable/issues/1178)) ([385ab33](https://togithub.com/googleapis/java-bigtable/commit/385ab33d12479a9d2b1b66babef9b9b5846b902a))

##### Documentation

-   **sample:** Add sample for native image support in Bigtable ([#&#8203;1165](https://togithub.com/googleapis/java-bigtable/issues/1165)) ([143aaee](https://togithub.com/googleapis/java-bigtable/commit/143aaee42e1b59d125250982dbeb34a31d906e30))

##### Dependencies

-   update actions/github-script action to v6 ([#&#8203;1170](https://togithub.com/googleapis/java-bigtable/issues/1170)) ([5790bdf](https://togithub.com/googleapis/java-bigtable/commit/5790bdf875d27e6194f1753ff66d208f65488716))
-   update dependency com.google.cloud:google-cloud-shared-dependencies to v2.8.0 ([#&#8203;1186](https://togithub.com/googleapis/java-bigtable/issues/1186)) ([74cafca](https://togithub.com/googleapis/java-bigtable/commit/74cafcae4a562b87f1664b8844794a2e68c97625))
-   update dependency com.google.cloud:native-image-support to v0.12.4 ([#&#8203;1175](https://togithub.com/googleapis/java-bigtable/issues/1175)) ([9cc6fbc](https://togithub.com/googleapis/java-bigtable/commit/9cc6fbc7de22303e17492824971fcc52fb041254))
-   update dependency com.google.cloud:native-image-support to v0.12.5 ([#&#8203;1183](https://togithub.com/googleapis/java-bigtable/issues/1183)) ([b025b34](https://togithub.com/googleapis/java-bigtable/commit/b025b343af0b9309558f530dc0765bf2b4c4d588))
-   update dependency com.google.cloud:native-image-support to v0.12.6 ([#&#8203;1187](https://togithub.com/googleapis/java-bigtable/issues/1187)) ([b110d65](https://togithub.com/googleapis/java-bigtable/commit/b110d650edd38a1866f6c2168c78ec8e31b528c2))
-   update dependency org.graalvm.buildtools:native-maven-plugin to v0.9.10 ([#&#8203;1174](https://togithub.com/googleapis/java-bigtable/issues/1174)) ([7ff5fa7](https://togithub.com/googleapis/java-bigtable/commit/7ff5fa712b6dcbbd3c721c8babb8ed4e1c7dad17))

##### [2.5.3](https://togithub.com/googleapis/java-bigtable/compare/v2.5.2...v2.5.3) (2022-02-08)

##### Bug Fixes

-   integration tests ([#&#8203;1161](https://togithub.com/googleapis/java-bigtable/issues/1161)) ([8b00b5f](https://togithub.com/googleapis/java-bigtable/commit/8b00b5fb5b4e3a1ada514b0bdc60fd744833bd01))

##### [2.5.2](https://togithub.com/googleapis/java-bigtable/compare/v2.5.1...v2.5.2) (2022-01-31)

##### Bug Fixes

-   UpdateAppProfileRequest equals and hashcode should build proto ([#&#8203;1142](https://togithub.com/googleapis/java-bigtable/issues/1142)) ([c9f1ed8](https://togithub.com/googleapis/java-bigtable/commit/c9f1ed8a5fdf44487a8c56388b35067ecfc4daea))

##### Dependencies

-   **java:** update actions/github-script action to v5 ([#&#8203;1339](https://togithub.com/googleapis/java-bigtable/issues/1339)) ([#&#8203;1147](https://togithub.com/googleapis/java-bigtable/issues/1147)) ([9bfcccf](https://togithub.com/googleapis/java-bigtable/commit/9bfcccfd76d2a03412cf9fe8c115874f15a95c57))
-   update actions/github-script action to v5 ([#&#8203;1146](https://togithub.com/googleapis/java-bigtable/issues/1146)) ([9b2c918](https://togithub.com/googleapis/java-bigtable/commit/9b2c918c3fad38d3b26d141b53f6dc037a23bed7))
-   update dependency com.google.cloud:google-cloud-shared-dependencies to v2.7.0 ([#&#8203;1150](https://togithub.com/googleapis/java-bigtable/issues/1150)) ([744e483](https://togithub.com/googleapis/java-bigtable/commit/744e4830238b6ebe7bab6115ff26600b0c150b62))

##### [2.5.1](https://www.github.com/googleapis/java-bigtable/compare/v2.5.0...v2.5.1) (2022-01-07)

##### Bug Fixes

-   Revert "fix: remove stats from javadoc" ([#&#8203;1118](https://www.togithub.com/googleapis/java-bigtable/issues/1118)) ([ba8f344](https://www.github.com/googleapis/java-bigtable/commit/ba8f344d19163627553a0a268742af2a1a792db5))

##### Dependencies

-   update dependency com.google.cloud:google-cloud-shared-dependencies to v2.6.0 ([#&#8203;1124](https://www.togithub.com/googleapis/java-bigtable/issues/1124)) ([55ebf69](https://www.github.com/googleapis/java-bigtable/commit/55ebf6932bbe93e8b7635a7550320099eb4fbe93))

</details>

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samples/install-without-bom/pom.xml

@@ -63,7 +63,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigtable</artifactId>
-      <version>2.5.3</version>
+      <version>2.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>

samples/snapshot/pom.xml

@@ -61,7 +61,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigtable</artifactId>
-      <version>2.5.3</version>
+      <version>2.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>

samples/snippets/pom.xml

@@ -79,7 +79,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-bigtable</artifactId>
-      <version>2.5.3</version>
+      <version>2.6.0</version>
       <scope>test</scope>
     </dependency>
     <dependency>