fix(ci): insert braces, take 2

.github/workflows/validate-renovate.yml

@@ -30,7 +30,7 @@ jobs:
           # let's do main part, but avoid pipefail
           (npx --yes --package "$package" -- renovate-config-validator --strict || true)\
             | ruby -e 'File.open(ENV[?H], ?w) {|r| while gets; puts $_; $> = r if $_.strip == "WARN: Config migration necessary" ;end; }'
-          echo '}' >> "H"
+          echo '}' >> "$H"
           echo "---"
           echo "Collected output: $H"
           cat "$H"