add working bash semver compare script

.github/workflows/reusable-check-version.yml

@@ -52,7 +52,9 @@ jobs:
       - name: Compare versions
         uses: actions/github-script@v7
         with:
+          # Bash semver compare script taken from https://stackoverflow.com/a/37939589
           script: |
-            if (( ${{env.MAIN_GALAXY_VERSION}} >= ${{env.CURRENT_GALAXY_VERSION}} )); then
+            function version { echo "$@" | awk -F. '{ printf("%d%03d%03d%03d\n", $1,$2,$3,$4); }'; }
+            if [ $(version ${{env.MAIN_GALAXY_VERSION}}) -ge $(version ${{env.CURRENT_GALAXY_VERSION}}) ]; then
               core.setFailed('Your Galaxy version is lower than the version in the main branch or equal. Please bump your version!')
             fi