Bump protobuf-java from 3.12.2 to 3.16.1 in /java (feast-dev#2208)

Bumps [protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.12.2 to 3.16.1.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/master/generate_changelog.py)
- [Commits](protocolbuffers/protobuf@v3.12.2...v3.16.1)

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

Signed-off-by: dependabot[bot] <[email protected]>

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

java/pom.xml

@@ -46,7 +46,7 @@
 
         <grpc.version>1.30.2</grpc.version>
         <protoc.version>3.12.2</protoc.version>
-        <protobuf.version>3.12.2</protobuf.version>
+        <protobuf.version>3.16.1</protobuf.version>
         <spring.boot.version>2.3.1.RELEASE</spring.boot.version>
         <spring.version>5.2.7.RELEASE</spring.version>
         <spring.security.version>5.3.0.RELEASE</spring.security.version>