chore(deps): bump org.gitlab4j:gitlab4j-api from 5.3.0 to 5.4.0

Bumps [org.gitlab4j:gitlab4j-api](https://github.com/gitlab4j/gitlab4j-api) from 5.3.0 to 5.4.0.
- [Release notes](https://github.com/gitlab4j/gitlab4j-api/releases)
- [Changelog](https://github.com/gitlab4j/gitlab4j-api/blob/main/CHANGELOG.md)
- [Commits](https://github.com/gitlab4j/gitlab4j-api/compare/gitlab4j-api-5.3.0...gitlab4j-api-5.4.0)

---
updated-dependencies:
- dependency-name: org.gitlab4j:gitlab4j-api
  dependency-type: direct:production
  update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>

pom.xml

@@ -19,7 +19,7 @@
     <properties>
         <revision>0.0.1-SNAPSHOT</revision>
         <org.eclipse.jgit.version>6.7.0.202309050840-r</org.eclipse.jgit.version>
-        <gitlab4j-api.version>5.3.0</gitlab4j-api.version>
+        <gitlab4j-api.version>5.4.0</gitlab4j-api.version>
         <maven-embedder.version>3.9.5</maven-embedder.version>
         <frontend-maven-plugin.version>1.14.2</frontend-maven-plugin.version>
         <maven-resolver-connector-basic.version>1.9.16</maven-resolver-connector-basic.version>