Bump org.jenkins-ci.plugins:gitlab-plugin in /bom-weekly (#2791)

Bumps [org.jenkins-ci.plugins:gitlab-plugin](https://github.com/jenkinsci/gitlab-plugin) from 1.7.18 to 1.8.0.
- [Release notes](https://github.com/jenkinsci/gitlab-plugin/releases)
- [Commits](jenkinsci/gitlab-plugin@gitlab-plugin-1.7.18...gitlab-plugin-1.8.0)

---
updated-dependencies:
- dependency-name: org.jenkins-ci.plugins:gitlab-plugin
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

bom-weekly/pom.xml

@@ -637,7 +637,7 @@
       <dependency>
         <groupId>org.jenkins-ci.plugins</groupId>
         <artifactId>gitlab-plugin</artifactId>
-        <version>1.7.18</version>
+        <version>1.8.0</version>
       </dependency>
       <dependency>
         <groupId>org.jenkins-ci.plugins</groupId>