Bump org.gitlab4j:gitlab4j-api in /java-components

Bumps [org.gitlab4j:gitlab4j-api](https://github.com/gitlab4j/gitlab4j-api) from 6.0.0-rc.2 to 6.0.0-rc.3.
- [Release notes](https://github.com/gitlab4j/gitlab4j-api/releases)
- [Changelog](https://github.com/gitlab4j/gitlab4j-api/blob/main/CHANGELOG.md)
- [Commits](gitlab4j/gitlab4j-api@gitlab4j-api-6.0.0-rc.2...gitlab4j-api-6.0.0-rc.3)

---
updated-dependencies:
- dependency-name: org.gitlab4j:gitlab4j-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

java-components/pom.xml

@@ -238,7 +238,7 @@
             <dependency>
                 <groupId>org.gitlab4j</groupId>
                 <artifactId>gitlab4j-api</artifactId>
-                <version>6.0.0-rc.2</version>
+                <version>6.0.0-rc.3</version>
             </dependency>
             <dependency>
                 <groupId>org.kohsuke</groupId>