CI: Fix get_version -> hatch version call

Author: effigies

.circleci/config.yml

@@ -287,7 +287,7 @@ jobs:
       - run:
           name: Validate version
           command: |
-            THISVERSION=$( python3 get_version.py )
+            THISVERSION=$( pipx run hatch version )
             python -m pip install dist/*.tar.gz
             mkdir empty
             cd empty