Release workflow: Update environment assignment

Author: AlexanderBrandborg

.github/workflows/release.yml

@@ -9,8 +9,8 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v2
-      - name: "Set ENV"
-        run: echo ::set-env name=RELEASE_VERSION::${GITHUB_REF#refs/*/}
+      - name: Set env
+        run:  echo RELEASE_VERSION=${GITHUB_REF#refs/*/} >> $GITHUB_ENV && echo $RELEASE_VERSION
       - name: "Install Dependencies"
         run: sudo apt-get install zip
       - name: "Create ZIP"