deps: update dependency com.google.api-client:google-api-client-bom to v1.30.8 (#38)

Author: renovate-bot

pom.xml

@@ -61,7 +61,7 @@
   <properties>
     <site.installationModule>grafeas</site.installationModule>
     <grpc.version>1.27.0</grpc.version>
-    <api-client.version>1.30.7</api-client.version>
+    <api-client.version>1.30.8</api-client.version>
     <google.core.version>1.92.4</google.core.version>
     <gax.version>1.53.1</gax.version>
     <http-client-bom.version>1.34.1</http-client-bom.version>