Simplify version_check script (#3152)

* Simplify version_check script

- Allow 'x.x.x' or 'x.x.x dev' on master branch (because we need to be able to tag releases from master)
- Remove duplicate regex checks
- Fix docstrings

* Run version check on all branches

- Will ensure we cannot merge in duplicate tags

* Add requests package

* Add requests package

.github/workflows/qc_checks.yaml

@@ -91,6 +91,10 @@ jobs:
         cache: 'pip'
     - name: Run pre-commit Checks
       uses: pre-commit/action@v2.0.3
+    - name: Check Version
+      run: |
+        pip install requests
+        python3 ci/version_check.py
 
   python:
     name: Tests - inventree-python