Dependency(deps): Bump com.google.errorprone:error_prone_core

Bumps [com.google.errorprone:error_prone_core](https://github.com/google/error-prone) 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_core
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

autograder-extra/pom.xml

@@ -84,7 +84,7 @@
         <dependency>
             <groupId>com.google.errorprone</groupId>
             <artifactId>error_prone_core</artifactId>
-            <version>2.29.2</version>
+            <version>2.30.0</version>
         </dependency>
     </dependencies>