fix: fix mismatched quotes

Author: silviudruma

action.yml

@@ -105,7 +105,7 @@ runs:
           extra-index-url = ${{ inputs.pip-extra-index-url }}"
         file: ${{ inputs.dockerfile }}
     - name: Image digest
-      run: echo "Image digest ${{ steps.docker_build.outputs.digest }}""
+      run: echo "Image digest ${{ steps.docker_build.outputs.digest }}"
       shell: bash
     - name: Comment latest docker image
       if: github.event_name == 'pull_request'