deps: update dependency com.google.protobuf:protobuf-bom to v3.21.10 (#936)

Author: renovate-bot

first-party-dependencies/pom.xml

@@ -60,7 +60,7 @@
     <grpc-gcp.version>1.3.1</grpc-gcp.version>
     <gson.version>2.10</gson.version>
     <guava.version>31.1-jre</guava.version>
-    <protobuf.version>3.21.9</protobuf.version>
+    <protobuf.version>3.21.10</protobuf.version>
     <google.api-common.version>2.2.2</google.api-common.version>
     <google.common-protos.version>2.11.0</google.common-protos.version>
     <google.core.version>2.8.28</google.core.version>