chore(main): release 0.122.15 (#804)

🤖 I have created a release *beep* *boop*
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### [0.122.15](googleapis/java-errorreporting@v0.122.14...v0.122.15) (2022-02-28)


### Dependencies

* update actions/setup-java action to v3 ([#801](googleapis/java-errorreporting#801)) ([a7715ad](googleapis/java-errorreporting@a7715ad))

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errorreporting/snapshot/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-errorreporting</artifactId>
-      <version>0.122.15-beta-SNAPSHOT</version>
+      <version>0.122.15-beta</version>
     </dependency>
     <!-- {x-version-update-end} -->