Use new-style environment settings (#4348)

etc/scripts/build-dist.sh

@@ -41,8 +41,8 @@ rm -rf node_modules/.cache/ node_modules/monaco-editor/
 find node_modules -name \*.ts -delete
 
 # Output some magic for GH to set the branch name and release name
-echo "::set-output name=branch::${GITHUB_REF#refs/heads/}"
-echo "::set-output name=release_name::${RELEASE_NAME}"
+echo "branch=${GITHUB_REF#refs/heads/}" >> "${GITHUB_OUTPUT}"
+echo "release_name=${RELEASE_NAME}" >> "${GITHUB_OUTPUT}"
 
 # Run to make sure we haven't just made something that won't work
 node -r esm ./app.js --version --dist