Bump com.google.errorprone:error_prone_core from 2.26.1 to 2.28.0

Bumps [com.google.errorprone:error_prone_core](https://github.com/google/error-prone) from 2.26.1 to 2.28.0.
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](google/error-prone@v2.26.1...v2.28.0)

---
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]>

build.gradle

@@ -83,7 +83,7 @@ dependencies {
     testImplementation fileTree(dir: "${cfPath}/framework-test/build/libs", include: "framework-test-*.jar")
     testImplementation 'junit:junit:4.13.2'
 
-    errorprone 'com.google.errorprone:error_prone_core:2.26.1'
+    errorprone 'com.google.errorprone:error_prone_core:2.28.0'
     errorproneJavac 'com.google.errorprone:javac:9+181-r4173-1'
 }