build(deps): update dependency com.google.cloud:google-cloud-shared-config to v1 (#305)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-shared-config](https://togithub.com/googleapis/java-shared-config) | `0.13.1` -> `1.0.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.0.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.0.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.0.0/compatibility-slim/0.13.1)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-config/1.0.0/confidence-slim/0.13.1)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-shared-config</summary>

### [`v1.0.0`](https://togithub.com/googleapis/java-shared-config/blob/master/CHANGELOG.md#&#8203;100-httpswwwgithubcomgoogleapisjava-shared-configcomparev0131v100-2021-07-29)

[Compare Source](https://togithub.com/googleapis/java-shared-config/compare/v0.13.1...v1.0.0)

##### ⚠ BREAKING CHANGES

-   update shared-config to java 1.8 ([#&#8203;277](https://togithub.com/googleapis/java-shared-config/issues/277))

##### Features

-   update shared-config to java 1.8 ([#&#8203;277](https://www.github.com/googleapis/java-shared-config/issues/277)) ([9c297a2](https://www.github.com/googleapis/java-shared-config/commit/9c297a27bc236092aab3ae292c7bed206293bc51))

##### [0.13.1](https://www.github.com/googleapis/java-shared-config/compare/v0.13.0...v0.13.1) (2021-07-27)

##### Bug Fixes

-   revert update dependency org.apache.maven.plugins:maven-dependency-plugin to v3.2.0 ([#&#8203;280](https://www.github.com/googleapis/java-shared-config/issues/280)) ([bdbbb9c](https://www.github.com/googleapis/java-shared-config/commit/bdbbb9c13571d0ef06009ebf03bc25c6e6fcbc17))

</details>

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Author: renovate-bot

java-workflows/google-cloud-workflows-bom/pom.xml

@@ -8,7 +8,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-shared-config</artifactId>
-    <version>0.13.1</version>
+    <version>1.0.0</version>
   </parent>
 
   <name>Google Cloud Workflows BOM</name>

java-workflows/pom.xml

@@ -14,7 +14,7 @@
   <parent>
     <groupId>com.google.cloud</groupId>
     <artifactId>google-cloud-shared-config</artifactId>
-    <version>0.13.1</version>
+    <version>1.0.0</version>
   </parent>
 
   <developers>