Bump protobuf-java from 3.5.1 to 3.16.1 in /interactive_engine (#1260)

Bumps [protobuf-java](https://github.com/protocolbuffers/protobuf) from 3.5.1 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@v3.5.1...v3.16.1)

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

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interactive_engine/pom.xml

@@ -38,7 +38,7 @@
     <log4j2.version>[2.17.1,)</log4j2.version>
     <hadoop.version>2.8.4</hadoop.version>
     <grpc.version>1.30.1</grpc.version>
-    <protobuf.version>3.5.1</protobuf.version>
+    <protobuf.version>3.16.1</protobuf.version>
     <tinkerpop.version>3.4.12</tinkerpop.version>
     <slf4j.version>1.7.21</slf4j.version>
     <groovy.version>2.5.14</groovy.version>

research/query_service/gremlin/compiler/pom.xml

@@ -87,7 +87,7 @@
             <dependency>
                 <groupId>com.google.protobuf</groupId>
                 <artifactId>protobuf-java</artifactId>
-                <version>3.12.2</version>
+                <version>3.16.1</version>
             </dependency>
             <dependency>
                 <groupId>com.google.protobuf</groupId>