Bump antlr-version from 4.8-1 to 4.9.2

Bumps `antlr-version` from 4.8-1 to 4.9.2.

Updates `antlr4-runtime` from 4.8-1 to 4.9.2
- [Release notes](https://github.com/antlr/antlr4/releases)
- [Changelog](https://github.com/antlr/antlr4/blob/master/CHANGES.txt)
- [Commits](https://github.com/antlr/antlr4/commits/4.9.2)

Updates `antlr4-maven-plugin` from 4.8-1 to 4.9.2
- [Release notes](https://github.com/antlr/antlr4/releases)
- [Changelog](https://github.com/antlr/antlr4/blob/master/CHANGES.txt)
- [Commits](https://github.com/antlr/antlr4/commits/4.9.2)

---
updated-dependencies:
- dependency-name: org.antlr:antlr4-runtime
  dependency-type: direct:production
- dependency-name: org.antlr:antlr4-maven-plugin
  dependency-type: direct:production
...

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

Author: dependabot[bot]

handlebars/pom.xml

@@ -241,7 +241,7 @@
   </dependencies>
 
   <properties>
-    <antlr-version>4.8-1</antlr-version>
+    <antlr-version>4.9.2</antlr-version>
   </properties>
 
   <profiles>