Update main.yml

Check if diff

.github/workflows/main.yml

@@ -6,14 +6,21 @@ jobs:
     steps:
       - name: Checkout repository
         uses: actions/checkout@v2
+
       - name: Clear destination directory
         run: rm -rf ./uncompressed/*
+
       - name: Extract files from QGZ
         run: 7z x geo2france.qgz -o./uncompressed
-      - name: Commit changes
+
+      - name: Configure Git
         run: |
           git config --local user.email "[email protected]"
           git config --local user.name "GitHub Action"
-          git add ./uncompressed
-          git commit -m "Decompress file"
-          git push
+  
+      - name: Check for changes
+        run: |
+          git diff --exit-code || git commit -am "Decompress file"
+  
+      - name: Push changes
+        run: git push