Patch set-output deprecation in workflows (#9543)

.github/workflows/check-merge.yml

@@ -50,10 +50,10 @@ jobs:
         if: steps.blocked.outputs.result != 'true'
         run: |
           echo "Checking for changesets marked as minor"
-          echo '::set-output name=found::false'
+          echo "found=false" >> $GITHUB_OUTPUT
           for file in ${{ steps.changed-files.outputs.all_changed_files }}; do
             if grep -q "'astro': minor" "$file"; then
-              echo '::set-output name=found::true'
+              echo "found=true" >> $GITHUB_OUTPUT
               echo "$file has a minor release tag"
             fi
           done

.github/workflows/main.yml

@@ -54,10 +54,10 @@ jobs:
           if [[ $output = '{ "changesets": [], "releases": [] }' ]]
           then
             echo 'No changeset found'
-            echo "::set-output name=run_job::true"
+            echo "run_job=true" >> $GITHUB_OUTPUT
           else
             echo 'changes found, push to latest skipped'
-            echo "::set-output name=run_job::false"
+            echo "run_job=false" >> $GITHUB_OUTPUT
           fi
 
   update:

.github/workflows/release.yml

@@ -62,7 +62,9 @@ jobs:
       - name: Generate Notification
         id: notification
         if: steps.changesets.outputs.published == 'true'
-        run: message=$(node scripts/notify/index.js '${{ steps.changesets.outputs.publishedPackages }}') && echo ::set-output name=message::${message//$'\n'/'%0A'}
+        run: |
+          message=$(node scripts/notify/index.js '${{ steps.changesets.outputs.publishedPackages }}')
+          echo "message=${message//$'\n'/'%0A'}" >> $GITHUB_OUTPUT
 
       - name: Discord Notification
         if: steps.changesets.outputs.published == 'true'