Bump antlr.version from 4.5 to 4.13.1

Bumps `antlr.version` from 4.5 to 4.13.1.

Updates `org.antlr:antlr4-runtime` from 4.5 to 4.13.1
- [Release notes](https://github.com/antlr/antlr4/releases)
- [Changelog](https://github.com/antlr/antlr4/blob/dev/CHANGES.txt)
- [Commits](antlr/antlr4@4.5...4.13.1)

Updates `org.antlr:antlr4-maven-plugin` from 4.5 to 4.13.1
- [Release notes](https://github.com/antlr/antlr4/releases)
- [Changelog](https://github.com/antlr/antlr4/blob/dev/CHANGES.txt)
- [Commits](antlr/antlr4@4.5...4.13.1)

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

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

alchemy-core/pom.xml

@@ -13,7 +13,7 @@
 
   <properties>
     <!-- this is the last version with org.antlr.v4.runtime.misc.Nullable -->
-    <antlr.version>4.5</antlr.version>
+    <antlr.version>4.13.1</antlr.version>
   </properties>
 
   <dependencyManagement>