Update softprops/action-gh-release action to v2

Author: renovate[bot]

.github/workflows/docker-image.yml

@@ -55,7 +55,7 @@ jobs:
         name: pv-control.tar.gz
         path: pv-control.tar.gz
     - name: Upload release distribution
-      uses: softprops/action-gh-release@v1
+      uses: softprops/action-gh-release@v2
       if: startsWith(github.ref, 'refs/tags/v')
       with:
         files: pv-control.tar.gz