test github...

.github/workflows/generate-release-zipfile.yml

@@ -22,6 +22,7 @@ jobs:
       - name: "Github requires checkout for 'uses: ./' (or we could hard write the repository's URL ?)"
         run: |
           git init
+          test -z "$GITHUB_TOKEN" && GITHUB_TOKEN="${{ github.token }}"
           MY_AUTHENTICATED_URL="$( echo "$GITHUB_SERVER_URL" | sed "s#^\(https\?://\)#\1$GITHUB_TOKEN\@#" )"
           git remote add origin "$MY_AUTHENTICATED_URL"/"$GITHUB_REPOSITORY"
           # Little and optional speed optimization