Test packaging via CI.

.gitlab-ci.yml

@@ -4,6 +4,7 @@ stages:
 - testing
 - security
 - docs
+- package
 - release
 
 # Change pip's cache directory to be inside the project directory since we can
@@ -60,7 +61,6 @@ pages:
     paths:
     - public
   rules:
-  - if: "$CI_COMMIT_REF_NAME == $CI_DEFAULT_BRANCH"
   - when: manual
 
 sast:
@@ -87,8 +87,8 @@ include:
   - template: Security/Dependency-Scanning.gitlab-ci.yml
   - template: Security/License-Scanning.gitlab-ci.yml
 
-upload_to_pip:
-  stage: release
+build_and_upload:
+  stage: package
   script:
     - pip install build twine
     - python3 -m build