Migrate release workflow to $GITHUB_OUTPUT

Author: TimWolla

.github/workflows/release.yml

@@ -54,7 +54,7 @@ jobs:
           password: ${{ secrets.GITHUB_TOKEN }}
       - name: Extract version from tag
         id: extract_version
-        run: echo ::set-output name=version::${GITHUB_REF/refs\/tags\/v/}
+        run: echo version=${GITHUB_REF/refs\/tags\/v/} >> $GITHUB_OUTPUT
       - uses: actions/checkout@v4
       - uses: docker/build-push-action@v6
         with: