Bump google-http-client-apache-v2 from 1.34.0 to 1.42.3

Bumps [google-http-client-apache-v2](https://github.com/googleapis/google-http-java-client) from 1.34.0 to 1.42.3.
- [Release notes](https://github.com/googleapis/google-http-java-client/releases)
- [Changelog](https://github.com/googleapis/google-http-java-client/blob/main/CHANGELOG.md)
- [Commits](googleapis/google-http-java-client@v1.34.0...v1.42.3)

---
updated-dependencies:
- dependency-name: com.google.http-client:google-http-client-apache-v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle

@@ -17,7 +17,7 @@ project.ext.dependencyStrings = [
   // - https://github.com/googleapis/java-shared-dependencies
   // - https://github.com/googleapis/java-cloud-bom
   GOOGLE_HTTP_CLIENT: 'com.google.http-client:google-http-client:1.34.0',
-  GOOGLE_HTTP_CLIENT_APACHE_V2: 'com.google.http-client:google-http-client-apache-v2:1.34.0',
+  GOOGLE_HTTP_CLIENT_APACHE_V2: 'com.google.http-client:google-http-client-apache-v2:1.42.3',
   GOOGLE_AUTH_LIBRARY_OAUTH2_HTTP: 'com.google.auth:google-auth-library-oauth2-http:0.18.0',
   GUAVA: 'com.google.guava:guava:31.0.1-jre',
   JSR305: 'com.google.code.findbugs:jsr305:3.0.2', // transitively pulled in by GUAVA