deps: update dependency com.google.cloud:google-cloud-shared-dependencies to v1.2.0 (#836)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-shared-dependencies](https://togithub.com/googleapis/java-shared-dependencies) | `1.1.0` -> `1.2.0` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-dependencies/1.2.0/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-dependencies/1.2.0/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-dependencies/1.2.0/compatibility-slim/1.1.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-shared-dependencies/1.2.0/confidence-slim/1.1.0)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

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

### [`v1.2.0`](https://togithub.com/googleapis/java-shared-dependencies/blob/master/CHANGELOG.md#&#8203;120-httpswwwgithubcomgoogleapisjava-shared-dependenciescompare110v120-2021-05-18)

[Compare Source](https://togithub.com/googleapis/java-shared-dependencies/compare/v1.1.0...v1.2.0)

##### Dependencies

-   update dependency com.google.api-client:google-api-client-bom to v1.31.5 ([#&#8203;353](https://www.github.com/googleapis/java-shared-dependencies/issues/353)) ([8d72ab0](https://www.github.com/googleapis/java-shared-dependencies/commit/8d72ab003e08c864aedc17fc190ba26f393bf0c7))
-   update dependency com.google.errorprone:error_prone_annotations to v2.7.1 ([#&#8203;360](https://www.github.com/googleapis/java-shared-dependencies/issues/360)) ([8f952d0](https://www.github.com/googleapis/java-shared-dependencies/commit/8f952d05745358fc426a1a2dcb688da5d5010239))
-   update dependency com.google.protobuf:protobuf-bom to v3.17.0 ([#&#8203;355](https://www.github.com/googleapis/java-shared-dependencies/issues/355)) ([09858fb](https://www.github.com/googleapis/java-shared-dependencies/commit/09858fb4f1b78a77e828501597d20df4db0ebfcf))
-   update dependency io.grpc:grpc-bom to v1.37.1 ([#&#8203;359](https://www.github.com/googleapis/java-shared-dependencies/issues/359)) ([bc9869e](https://www.github.com/googleapis/java-shared-dependencies/commit/bc9869e914314f951afd69f2acae95c414398f43))
-   update google.common-protos.version to v2.2.1 ([#&#8203;358](https://www.github.com/googleapis/java-shared-dependencies/issues/358)) ([a3ed764](https://www.github.com/googleapis/java-shared-dependencies/commit/a3ed764a0e5143ee323d4b69c9747b8265d349e2))
-   update iam.version to v1.0.14 ([#&#8203;352](https://www.github.com/googleapis/java-shared-dependencies/issues/352)) ([bea9a01](https://www.github.com/googleapis/java-shared-dependencies/commit/bea9a01788ac1332a4bc7e06574ef5701700fe90))

</details>

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Diff for: pom.xml

@@ -63,7 +63,7 @@
     <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     <github.global.server>github</github.global.server>
     <site.installationModule>google-cloud-storage-parent</site.installationModule>
-    <google.cloud.shared-dependencies.version>1.1.0</google.cloud.shared-dependencies.version>
+    <google.cloud.shared-dependencies.version>1.2.0</google.cloud.shared-dependencies.version>
   </properties>
 
   <dependencyManagement>