chore(deps): bump com.google.errorprone:error_prone_core

Bumps [com.google.errorprone:error_prone_core](https://github.com/google/error-prone) from 2.19.1 to 2.21.1.
- [Release notes](https://github.com/google/error-prone/releases)
- [Commits](google/error-prone@v2.19.1...v2.21.1)

---
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

@@ -28,7 +28,7 @@ allprojects {
     dependencies {
         // https://github.com/google/error-prone
         // https://errorprone.info/
-        errorprone "com.google.errorprone:error_prone_core:2.19.1"
+        errorprone "com.google.errorprone:error_prone_core:2.21.1"
 
         // https://github.com/uber/NullAway
         errorprone "com.uber.nullaway:nullaway:0.10.12"

examples/build.gradle

@@ -5,7 +5,7 @@ dependencies {
     implementation "org.slf4j:slf4j-simple:2.0.7"
     implementation "io.grpc:grpc-netty-shaded:1.57.2"
     implementation "io.github.cdimascio:java-dotenv:5.3.1"
-    implementation "com.google.errorprone:error_prone_core:2.19.1"
+    implementation "com.google.errorprone:error_prone_core:2.21.1"
 }
 
 tasks.addRule("Pattern: run<Example>: Runs an example.") { String taskName ->