WORKFLOW: adding github token to elevate refwrite tag task permissions [skip ci]

.github/workflows/cooker-selfhosted.yml

@@ -166,6 +166,8 @@ jobs:
           fi
           git tag "${{ env.TAG }}"             # Create the tag locally               
           git push origin "${{ env.TAG }}"     # Push the new tag in the remote repo
+        env:
+          GITHUB_TOKEN: ${{ secrets.TRIGGER_BUILD_TOKEN }}
 
       # In case it cannot publish the release at least it's providing the flatpak file for creating a manual release
       - name: Upload RetroDECK-cooker.flatpak