Bump log4j.version from 2.25.4 to 2.26.0 (closes #264)

Bumps `log4j.version` from 2.25.4 to 2.26.0.

Updates `org.apache.logging.log4j:log4j-api` from 2.25.4 to 2.26.0

Updates `org.apache.logging.log4j:log4j-core` from 2.25.4 to 2.26.0

Updates `org.apache.logging.log4j:log4j-slf4j2-impl` from 2.25.4 to 2.26.0

Updates `org.apache.logging.log4j:log4j-jul` from 2.25.4 to 2.26.0

---
updated-dependencies:
- dependency-name: org.apache.logging.log4j:log4j-api
  dependency-version: 2.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.logging.log4j:log4j-core
  dependency-version: 2.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.logging.log4j:log4j-slf4j2-impl
  dependency-version: 2.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.apache.logging.log4j:log4j-jul
  dependency-version: 2.26.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Change-Id: I4397a1cdc19c34ff502a6aa67c898d7482516c18
Reviewed-on: https://korap.ids-mannheim.de/gerrit/c/KorAP/Koral/+/10834
Reviewed-by: Nils Diewald <nils@diewald-online.de>
diff --git a/pom.xml b/pom.xml
index 4f38935..36cb690 100644
--- a/pom.xml
+++ b/pom.xml
@@ -44,7 +44,7 @@
 		<antlr4.version>4.13.2</antlr4.version>
 		<antlr3.version>3.5.3</antlr3.version>
 		<java.version>21</java.version>
-		<log4j.version>2.25.4</log4j.version>
+		<log4j.version>2.26.0</log4j.version>
 	</properties>
 	
 	<repositories>