Bump log4j.version from 2.25.3 to 2.25.4 (closes #261)

Bumps `log4j.version` from 2.25.3 to 2.25.4.

Updates `org.apache.logging.log4j:log4j-api` from 2.25.3 to 2.25.4

Updates `org.apache.logging.log4j:log4j-core` from 2.25.3 to 2.25.4

Updates `org.apache.logging.log4j:log4j-slf4j2-impl` from 2.25.3 to 2.25.4

Updates `org.apache.logging.log4j:log4j-jul` from 2.25.3 to 2.25.4

---
updated-dependencies:
- dependency-name: org.apache.logging.log4j:log4j-api
  dependency-version: 2.25.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.logging.log4j:log4j-core
  dependency-version: 2.25.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.logging.log4j:log4j-slf4j2-impl
  dependency-version: 2.25.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.apache.logging.log4j:log4j-jul
  dependency-version: 2.25.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Change-Id: Ida4e124aeefc6d74b0641b6a6ade95496d833a94
Reviewed-on: https://korap.ids-mannheim.de/gerrit/c/KorAP/Koral/+/10800
Reviewed-by: Nils Diewald <nils@diewald-online.de>
diff --git a/pom.xml b/pom.xml
index 6348b8e..0a330ec 100644
--- a/pom.xml
+++ b/pom.xml
@@ -43,7 +43,7 @@
 		<antlr4.version>4.9.3</antlr4.version>
 		<antlr3.version>3.5.3</antlr3.version>
 		<java.version>21</java.version>
-		<log4j.version>2.25.3</log4j.version>
+		<log4j.version>2.25.4</log4j.version>
 	</properties>
 	
 	<repositories>