deps: update dependency com.google.cloud:google-cloud-shared-dependencies to v0.16.0 (#252)

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This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.cloud:google-cloud-shared-dependencies](https://togithub.com/googleapis/java-shared-dependencies) | minor | `0.15.0` -> `0.16.0` |

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### Release Notes

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

### [`v0.16.0`](https://togithub.com/googleapis/java-shared-dependencies/blob/master/CHANGELOG.md#&#8203;0160-httpswwwgithubcomgoogleapisjava-shared-dependenciescompare0150v0160-2020-12-02)

[Compare Source](https://togithub.com/googleapis/java-shared-dependencies/compare/v0.15.0...v0.16.0)

##### Dependencies

-   update dependency com.fasterxml.jackson:jackson-bom to v2.12.0 ([#&#8203;225](https://www.github.com/googleapis/java-shared-dependencies/issues/225)) ([b78a1ef](https://www.github.com/googleapis/java-shared-dependencies/commit/b78a1ef83ad946b0d29cd0dff46e48fbde44d120))
-   update dependency com.google.api-client:google-api-client-bom to v1.31.1 ([#&#8203;215](https://www.github.com/googleapis/java-shared-dependencies/issues/215)) ([08d643a](https://www.github.com/googleapis/java-shared-dependencies/commit/08d643aaf289984b87d734274830712af82585b6))
-   update dependency com.google.protobuf:protobuf-bom to v3.14.0 ([#&#8203;217](https://www.github.com/googleapis/java-shared-dependencies/issues/217)) ([01a9c64](https://www.github.com/googleapis/java-shared-dependencies/commit/01a9c6442906e8482a53712eba95ccc6f7040928))
-   update dependency io.grpc:grpc-bom to v1.34.0 ([#&#8203;228](https://www.github.com/googleapis/java-shared-dependencies/issues/228)) ([425d1ea](https://www.github.com/googleapis/java-shared-dependencies/commit/425d1eab2a046c365f816f946576e4030e7c3696))
-   update gax.version to v1.60.1 ([#&#8203;223](https://www.github.com/googleapis/java-shared-dependencies/issues/223)) ([84c75bd](https://www.github.com/googleapis/java-shared-dependencies/commit/84c75bdbd3f86ef7187373289ee08ad3a0c24719))
-   update google.core.version to v1.94.0 ([#&#8203;212](https://www.github.com/googleapis/java-shared-dependencies/issues/212)) ([764ef5e](https://www.github.com/googleapis/java-shared-dependencies/commit/764ef5e9a2272cd9244a8fc5cc107ffacf9e9d5b))

</details>

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Author: renovate-bot

pom.xml

@@ -74,7 +74,7 @@
       <dependency>
         <groupId>com.google.cloud</groupId>
         <artifactId>google-cloud-shared-dependencies</artifactId>
-        <version>0.15.0</version>
+        <version>0.16.0</version>
         <type>pom</type>
         <scope>import</scope>
       </dependency>