Bump versions.errorprone from 2.17.0 to 2.18.0 (#2857)

Bumps `versions.errorprone` from 2.17.0 to 2.18.0.

Updates `error_prone_core` from 2.17.0 to 2.18.0
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](google/error-prone@v2.17.0...v2.18.0)

Updates `error_prone_test_helpers` from 2.17.0 to 2.18.0
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](google/error-prone@v2.17.0...v2.18.0)

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

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

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

gradle/dependencies.gradle

@@ -6,7 +6,7 @@ def versions = [:]
 
 versions.bytebuddy = '1.12.21'
 versions.junitJupiter = '5.9.1'
-versions.errorprone = '2.17.0'
+versions.errorprone = '2.18.0'
 
 libraries.junit4 = 'junit:junit:4.13.2'
 libraries.junitJupiterApi = "org.junit.jupiter:junit-jupiter-api:${versions.junitJupiter}"