Bump antlr3.version from 3.5.2 to 3.5.3

Bumps `antlr3.version` from 3.5.2 to 3.5.3.

Updates `antlr-runtime` from 3.5.2 to 3.5.3
- [Release notes](https://github.com/antlr/antlr3/releases)
- [Commits](https://github.com/antlr/antlr3/compare/3.5.2...3.5.3)

Updates `antlr3-maven-plugin` from 3.5.2 to 3.5.3
- [Release notes](https://github.com/antlr/antlr3/releases)
- [Commits](https://github.com/antlr/antlr3/compare/3.5.2...3.5.3)

---
updated-dependencies:
- dependency-name: org.antlr:antlr-runtime
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.antlr:antlr3-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Change-Id: I26a7762e95fac0b5cb42efb66badc6243f38b290
Signed-off-by: dependabot[bot] <support@github.com>
Reviewed-on: https://korap.ids-mannheim.de/gerrit/c/KorAP/Koral/+/5802
diff --git a/pom.xml b/pom.xml
index 4751029..248299b 100644
--- a/pom.xml
+++ b/pom.xml
@@ -38,7 +38,7 @@
 		<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>		
 		<jackson.version>[2.12.4,)</jackson.version>
 		<antlr4.version>4.9.3</antlr4.version>
-		<antlr3.version>3.5.2</antlr3.version>
+		<antlr3.version>3.5.3</antlr3.version>
 		<java.version>1.8</java.version>
 		<log4j.version>[2.17.1,)</log4j.version>
 	</properties>