Updated release workflow to use new environment file instead of set env.

Signed-off-by: Johannes Tegnér <[email protected]>

Author: Johannestegner

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Build with Gradle
         run: gradle build
       - name: Set version
-        run: echo ::set-env name=RELEASE_VERSION::${GITHUB_REF#refs/*/}
+        run: echo "RELEASE_VERSION=${GITHUB_REF#refs/*/}" >> $GITHUB_ENV
       - name: Publish to GitHub Packages
         run: gradle publish
         env: