deps: update google.core.version to v2.9.1 (#962)

Author: renovate-bot

first-party-dependencies/pom.xml

@@ -58,7 +58,7 @@
     <gapic-generator-java-bom.version>2.13.0</gapic-generator-java-bom.version>
     <grpc-gcp.version>1.3.2</grpc-gcp.version>
     <gson.version>2.10.1</gson.version>
-    <google.core.version>2.9.0</google.core.version>
+    <google.core.version>2.9.1</google.core.version>
     <google.http-client.version>1.42.3</google.http-client.version>
     <google.oauth-client.version>1.34.1</google.oauth-client.version>
     <google.api-client.version>2.1.2</google.api-client.version>