Remove deprecated set-output from release workflow

Author: vivekjoshy

.github/workflows/release.yml

@@ -15,7 +15,7 @@ jobs:
 
       - name: Get Tag
         id: tag
-        run: echo ::set-output name=tag::${GITHUB_REF#refs/tags/}
+        run: echo "tag=${GITHUB_REF#refs/tags/}" >> $GITHUB_OUTPUT
 
       - name: Set Up Python 3.11
         uses: actions/setup-python@v4
@@ -35,7 +35,7 @@ jobs:
         id: check-version
         run: |
           [[ "$(python -c "import openskill; print(openskill.__version__)")" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]] \
-            || echo ::set-output name=prerelease::true
+            || echo "prerelease=true" >> $GITHUB_OUTPUT
       - name: Create Release
         uses: ncipollo/release-action@v1
         with: