chore: release 0.120.18 (#463)

🤖 I have created a release \*beep\* \*boop\*
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### [0.120.18](https://www.github.com/googleapis/java-errorreporting/compare/v0.120.17...v0.120.18) (2021-03-11)


### Dependencies

* update dependency com.google.cloud:google-cloud-core to v1.94.3 ([#458](https://www.github.com/googleapis/java-errorreporting/issues/458)) ([3dc7ed7](https://www.github.com/googleapis/java-errorreporting/commit/3dc7ed79de354e24715a41cf57ea949a350dec22))
* update dependency com.google.cloud:google-cloud-shared-dependencies to v0.20.1 ([#464](https://www.github.com/googleapis/java-errorreporting/issues/464)) ([56dd0d8](https://www.github.com/googleapis/java-errorreporting/commit/56dd0d8937c01c96b3fd0bd3827365f6607043fa))
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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>0.120.35-beta-SNAPSHOT</version>
+      <version>0.120.35-beta</version>
     </dependency>
     <!-- {x-version-update-end} -->