chore(deps): bump protobuf-java from 3.16.1 to 3.16.3 in /bom

Bumps [protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.16.1 to 3.16.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](protocolbuffers/protobuf@v3.16.1...v3.16.3)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-type: direct:production
...

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

bom/pom.xml

@@ -32,7 +32,7 @@
         <!-- serialization -->
         <hessian.version>3.3.13</hessian.version>
         <thrift.version>0.9.2</thrift.version>
-        <protobuf.version>3.16.1</protobuf.version>
+        <protobuf.version>3.16.3</protobuf.version>
         <jackson.version>2.9.10</jackson.version>
         <jackson.databind.version>2.9.10.8</jackson.databind.version>
         <msgpack.version>0.6.12</msgpack.version>