Bump org.omnifaces:antlr-maven-plugin from 2.3 to 2.4

Bumps [org.omnifaces:antlr-maven-plugin](https://github.com/omnifaces/antlr-maven-plugin) from 2.3 to 2.4.
- [Commits](https://github.com/omnifaces/antlr-maven-plugin/commits)

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

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

Author: dependabot[bot]

exist-core/pom.xml

@@ -1069,7 +1069,7 @@ The BaseX Team. The original license statement is also included below.]]></pream
             <plugin>
                 <groupId>org.omnifaces</groupId>
                 <artifactId>antlr-maven-plugin</artifactId>
-                <version>2.3</version>
+                <version>2.4</version>
                 <configuration>
                     <grammars>
                         org/exist/xquery/parser/XQuery.g,org/exist/xquery/parser/XQueryTree.g,org/exist/xquery/parser/DeclScanner.g,org/exist/xquery/xqdoc/parser/XQDocParser.g

extensions/modules/simpleql/pom.xml

@@ -69,7 +69,7 @@
             <plugin>
                 <groupId>org.omnifaces</groupId>
                 <artifactId>antlr-maven-plugin</artifactId>
-                <version>2.3</version>
+                <version>2.4</version>
                 <configuration>
                     <grammars>org/exist/xquery/modules/simpleql/SimpleQLParser.g</grammars>
                 </configuration>