use bash conditionals and not python conditionals (💀)

.forgejo/workflows/autotagger.yaml

@@ -28,10 +28,10 @@ jobs:
         run: |
           COMMIT_MESSAGE=$(echo "${{ steps.extract_commit_message.outputs.message }}")
           OUTPUT=$(python .forgejo/workflows/scripts/message.py "$COMMIT_MESSAGE")
-          if [[ "$OUTPUT" == "Usage: python message.py <commit_message>" ]]; then
+          if [[ "$OUTPUT" = "Usage: python message.py <commit_message>" ]]; then
             echo "Called without commit message!"
             exit 1
-          elif [[ "$OUTPUT" == "None" ]]; then
+          if [[ "$OUTPUT" = "None" ]]; then
             echo "::set-output name=latest_tag::$(git describe --tags --abbrev=0)"
           else
             echo "::set-output name=version::$OUTPUT"