Bump protobuf-java from 3.6.0 to 3.16.3

Bumps [protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.6.0 to 3.16.3.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/generate_changelog.py)
- [Commits](https://github.com/protocolbuffers/protobuf/compare/v3.6.0...v3.16.3)

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

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/pom.xml b/pom.xml
index ee7dbc8..6b90c24 100644
--- a/pom.xml
+++ b/pom.xml
@@ -83,7 +83,7 @@
 
   <properties>
     <!-- Test -->
-    <protobuf-java.version>3.6.0</protobuf-java.version>
+    <protobuf-java.version>3.16.3</protobuf-java.version>
     <!-- Used for UTF8 testing -->
     <zero-allocation-hashing.version>0.8</zero-allocation-hashing.version>
     <testng.version>7.4.0</testng.version>