tools: fix update-eslint.sh

PR-URL: #36579
Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>

tools/update-eslint.sh

@@ -9,26 +9,26 @@
 
 cd "$( dirname "$0" )" || exit
 rm -rf node_modules/eslint
-{
+(
     mkdir eslint-tmp
     cd eslint-tmp || exit
     npm init --yes
 
     npm install --global-style --no-bin-links --production --no-package-lock eslint@latest
 
-    {
+    (
         cd node_modules/eslint || exit
 
         npm install --no-bin-links --production --no-package-lock eslint-plugin-markdown@latest
-    }
+    )
 
 
     # Use dmn to remove some unneeded files.
     npx dmn@2.2.2 -f clean
     # Use removeNPMAbsolutePaths to remove unused data in package.json.
     # This avoids churn as absolute paths can change from one dev to another.
     npx removeNPMAbsolutePaths@1.0.4 .
-}
+)
 
 mv eslint-tmp/node_modules/eslint node_modules/eslint
 rm -rf eslint-tmp/