chore(deps): update dependency com.google.cloud:google-cloud-errorrep…

…orting to v0.120.7-beta (#304)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [com.google.cloud:google-cloud-errorreporting](https://togithub.com/GoogleCloudPlatform/google-cloud-java) | patch | `0.120.5-beta` -> `0.120.7-beta` |

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errorreporting/install-without-bom/pom.xml

@@ -29,7 +29,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-errorreporting</artifactId>
-      <version>0.120.5-beta</version>
+      <version>0.120.7-beta</version>
     </dependency>
     <!-- [END clouderrorreporting_install_without_bom] -->