deps: update dependency com.google.cloud:google-cloud-bigtable to v2.5.2 (#1821)

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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) | `2.5.1` -> `2.5.2` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable/2.5.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable/2.5.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable/2.5.2/compatibility-slim/2.5.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-bigtable/2.5.2/confidence-slim/2.5.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v2.5.2`](https://togithub.com/googleapis/java-bigtable/blob/HEAD/CHANGELOG.md#&#8203;252-httpsgithubcomgoogleapisjava-bigtablecomparev251v252-2022-01-31)

[Compare Source](https://togithub.com/googleapis/java-bigtable/compare/v2.5.1...v2.5.2)

</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>2.5.1</version>
+      <version>2.5.2</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>2.5.1</version>
+      <version>2.5.2</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>2.5.1</version>
+      <version>2.5.2</version>
       <scope>test</scope>
     </dependency>
     <dependency>