deps: update dependency com.google.protobuf:protobuf-bom to v3.21.11

Author: renovate-bot

first-party-dependencies/pom.xml

@@ -60,7 +60,7 @@
  <grpc-gcp.version>1.3.2</grpc-gcp.version>
  <gson.version>2.10</gson.version>
  <guava.version>31.1-jre</guava.version>
- <protobuf.version>3.21.10</protobuf.version>
+ <protobuf.version>3.21.11</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>2.9.0</google.core.version>