Update build workflow to trigger on release events and adjust update job to include token

.gitea/workflows/update.yaml

@@ -64,6 +64,7 @@ jobs:
         uses: softprops/action-gh-release@v2
         if: ${{ env.ID > 0 && env.DRAFT != 'true' }}
         with:
+          token: ${{ secrets.GT_UPDATE_TOKEN }}
           prerelease: ${{ env.PRERELEASE }}
           name: ${{ env.NAME }}
           tag_name: ${{ env.TAG_NAME }}