Resolve "Fix hard coded gitlab project id in maven configuration"

Related issues

The gitlab project is hard coded. This is fixed via using gitlab ci variables.

Acceptance criteria

• Implemented code changes don't diverge from the related issue.
• Only released versions of dependencies are used (i.e. no snapshot versions).
• Pipeline still works.
• GitLab issue is up-to-date.

If necessary, the following sections have been updated:

• Swagger
• Readme.md

Proposed squash commit message

Optimize GitLab CI Pipeline

• The gitlab project ID was hard coded in pom.xml. This is fixed via using gitlab ci variables without defining the variables in pom.xml file.
• Add Dependency-Scanning in .gitlab-ci.yml file to enable security scanning of dependencies to detect dependencies with known security issues.