CLDR-17184 fix some warnings in staging and prod actions

- use the GITHUB_OUTPUT file instead of set-output in production
- drop an unneeded set-output in staging

.github/workflows/production.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Calculate Tag Name
         id: tagname
         run: >
-          echo "::set-output name=tag::$(env TZ=UTC date +'production/%Y-%m-%d-%H%Mz')"
+          echo "tag=$(env TZ=UTC date +'production/%Y-%m-%d-%H%Mz')" >> $GITHUB_OUTPUT
       - name: Set up JDK
         uses: actions/setup-java@v4
         with:

.github/workflows/staging.yml

@@ -27,10 +27,6 @@ jobs:
           ref: ${{ github.event.inputs.git-ref }}
           repository: ${{ github.event.inputs.repo }}
           lfs: false
-      - name: Calculate Tag Name
-        id: tagname
-        run: >
-          echo "::set-output name=tag::$(env TZ=UTC date +'staging/%Y-%m-%d-%H%Mz')"
       - name: Set up JDK
         uses: actions/setup-java@v4
         with: