chore(master): release 0.120.16 (#447)

🤖 I have created a release \*beep\* \*boop\* 
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### [0.120.16](https://www.github.com/googleapis/java-errorreporting/compare/v0.120.15...v0.120.16) (2021-02-25)


### Dependencies

* update dependency com.google.cloud:google-cloud-shared-dependencies to v0.20.0 ([#446](https://www.github.com/googleapis/java-errorreporting/issues/446)) ([41bd05e](https://www.github.com/googleapis/java-errorreporting/commit/41bd05ef7ba7b6f700b96bbae8b99f3c61ac104e))
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This PR was generated with [Release Please](https://github.com/googleapis/release-please). See [documentation](https://github.com/googleapis/release-please#release-please).

Author: release-please[bot]

errorreporting/snapshot/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-errorreporting</artifactId>
-      <version>0.120.33-beta-SNAPSHOT</version>
+      <version>0.120.33-beta</version>
     </dependency>
     <!-- {x-version-update-end} -->