replace ::set-output in notify-tap action

Update the notify-tap.yml GitHub Action workflow to replace the
deprecated ::set-output command with the newer $GITHUB_OUTPUT file
mechanism.

.github/workflows/notify-tap.yml

@@ -13,7 +13,7 @@ jobs:
 
       - id: clean_version
         run: |
-          echo "::set-output name=release::${VERSION#v}"
+          echo "release=${VERSION#v}" >> $GITHUB_OUTPUT
         env:
           VERSION: "${{ steps.get_version.outputs.release }}"