fix(build): update usage of publish snap action (#3272)

* fix(build): use env variable to login with snapcraft 7

* refactor(build): replace deprecated set-output command in GHA

* fix(build): use correct environment variable for output

* style(build): run prettier

.github/workflows/ci.yml

@@ -94,9 +94,9 @@ jobs:
         run: |
           failures=(neutral, skipped, timed_out, action_required)
           if [[ ${array[@]} =~ $WORKFLOW_CONCLUSION ]]; then
-            echo ::set-output name=status::failure
+            echo "status=failure" >> $GITHUB_OUTPUT
           else
-            echo ::set-output name=status::$WORKFLOW_CONCLUSION
+            echo "status=$WORKFLOW_CONCLUSION" >> $GITHUB_OUTPUT
           fi
       - name: Post Status to Discord
         uses: sarisia/actions-status-discord@v1