Bump protobuf-java from 2.5.0 to 3.16.1 in /phoenix5-spark3 (#81)

Bumps [protobuf-java](https://github.com/protocolbuffers/protobuf) from 2.5.0 to 3.16.1.
- [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/v2.5.0...v3.16.1)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
diff --git a/phoenix5-spark3/pom.xml b/phoenix5-spark3/pom.xml
index 13ff51a..2221bea 100644
--- a/phoenix5-spark3/pom.xml
+++ b/phoenix5-spark3/pom.xml
@@ -122,7 +122,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>2.5.0</version>
+      <version>3.16.1</version>
       <scope>provided</scope>
     </dependency>