CI: convert galaxy version check to pre-commit + autodetect

.pre-commit-config.yaml

@@ -70,6 +70,14 @@ repos:
           - pathlib
           - pyaml
 
+      - id: check-galaxy-version
+        name: Verify correct version for galaxy.yml
+        entry: scripts/galaxy_version.py
+        language: python
+        pass_filenames: false
+        additional_dependencies:
+          - ruamel.yaml
+
       - id: jinja-syntax-check
         name: jinja-syntax-check
         entry: tests/scripts/check-templates.py