Remove the branch requirement for PyPI release

.gitlab-ci.yml

@@ -17,7 +17,7 @@ sonarqube-check:
 
 pypi-release:
   rules:
-    - if: '$CI_COMMIT_BRANCH == "master" && $CI_COMMIT_TAG =~ /^v/'
+    - if: '$CI_COMMIT_TAG =~ /^v\d+/'
   script:
     - pip3 install --upgrade pip build twine
     - rm -f dist/*