MINOR: [Java] Bump error_prone_core.version in /java

Bumps `error_prone_core.version` from 2.29.2 to 2.30.0.

Updates `com.google.errorprone:error_prone_annotations` from 2.29.2 to 2.30.0
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](google/error-prone@v2.29.2...v2.30.0)

Updates `com.google.errorprone:error_prone_core` from 2.29.2 to 2.30.0
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](google/error-prone@v2.29.2...v2.30.0)

---
updated-dependencies:
- dependency-name: com.google.errorprone:error_prone_annotations
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: com.google.errorprone:error_prone_core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

java/pom.xml

@@ -107,7 +107,7 @@ under the License.
     <forkCount>2</forkCount>
     <checkstyle.version>10.17.0</checkstyle.version>
     <checkstyle.failOnViolation>true</checkstyle.failOnViolation>
-    <error_prone_core.version>2.29.2</error_prone_core.version>
+    <error_prone_core.version>2.30.0</error_prone_core.version>
     <mockito.core.version>5.11.0</mockito.core.version>
     <mockito.inline.version>5.2.0</mockito.inline.version>
     <checker.framework.version>3.46.0</checker.framework.version>