Bump org.antlr:antlr4 in /data-prepper-logstash-configuration

Bumps [org.antlr:antlr4](https://github.com/antlr/antlr4) from 4.10.1 to 4.12.0.
- [Release notes](https://github.com/antlr/antlr4/releases)
- [Changelog](https://github.com/antlr/antlr4/blob/master/CHANGES.txt)
- [Commits](antlr/antlr4@4.10.1...4.12.0)

---
updated-dependencies:
- dependency-name: org.antlr:antlr4
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

data-prepper-logstash-configuration/build.gradle

@@ -13,7 +13,7 @@ ext {
 }
 
 dependencies {
-    antlr('org.antlr:antlr4:4.10.1') {
+    antlr('org.antlr:antlr4:4.12.0') {
         exclude group: 'org.glassfish', module: 'javax.json'
     }
     implementation project(':data-prepper-api')