Bump com.google.protobuf:protobuf-java from 4.30.1 to 4.30.2 in /java (#273)

Bumps [com.google.protobuf:protobuf-java](https://github.com/protocolbuffers/protobuf) from 4.30.1 to 4.30.2.
- [Release notes](https://github.com/protocolbuffers/protobuf/releases)
- [Changelog](https://github.com/protocolbuffers/protobuf/blob/main/protobuf_release.bzl)
- [Commits](protocolbuffers/protobuf@v4.30.1...v4.30.2)

---
updated-dependencies:
- dependency-name: com.google.protobuf:protobuf-java
  dependency-version: 4.30.2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Diff for: java/coherence-client/pom.xml

@@ -175,7 +175,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>4.30.1</version>
+      <version>4.30.2</version>
     </dependency>
 
     <!-- test dependencies -->

Diff for: java/coherence-server/pom.xml

@@ -151,7 +151,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>4.30.1</version>
+      <version>4.30.2</version>
     </dependency>
 
     <!-- test dependencies -->

Diff for: java/helidon-client/pom.xml

@@ -131,7 +131,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>4.30.1</version>
+      <version>4.30.2</version>
     </dependency>
 
     <!-- JavaFX dependencies -->

Diff for: java/helidon-server/pom.xml

@@ -163,7 +163,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>4.30.1</version>
+      <version>4.30.2</version>
     </dependency>
 
     <!-- jandex -->

Diff for: java/micronaut-server/pom.xml

@@ -169,7 +169,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>4.30.1</version>
+      <version>4.30.2</version>
     </dependency>
     <dependency>
       <groupId>${coherence.groupId}</groupId>

Diff for: java/spring-server/pom.xml

@@ -86,7 +86,7 @@
     <dependency>
       <groupId>com.google.protobuf</groupId>
       <artifactId>protobuf-java</artifactId>
-      <version>4.30.1</version>
+      <version>4.30.2</version>
     </dependency>
     <dependency>
       <groupId>org.springframework.boot</groupId>