refactor: replace individual prettier and buildifier calls with pnpm ng-dev format for version file updates

This ensures the correct formatting of files.

Author: alan-agius4

bazel/rules/rules_browsers/browsers/private/update-tool/index.mts

@@ -113,25 +113,17 @@ async function downloadMilestonesAndWriteVersionsFiles({
     generateVersionsBzlFile(getReadableBrowserName(browser), defaultVersion, versions),
   );
 
-  // Format the resulting `.json` file. Prettier may apply some formatting that
-  // isn't consistent with default stringification (e.g. line length).
-  exec(`npx prettier --write ${jsonFilePath}`, (err, stdout, stderr) => {
-    if (err) {
-      console.log(stdout);
-      console.log(stderr);
-      console.warn(`Formatting of ${jsonFilePath} failed: ${err.message}`);
-    }
-  });
-
-  // Format the resulting `.bzl` file. JSON is valid here, but it's not
-  // formatted quite right (e.g. no trailing comma).
-  exec(`buildifier ${bzlFilePath}`, (err, stdout, stderr) => {
-    if (err) {
-      console.log(stdout);
-      console.log(stderr);
-      console.warn(`Formatting of ${bzlFilePath} failed: ${err.message}`);
-    }
-  });
+  exec(
+    `pnpm ng-dev format files ${bzlFilePath} ${jsonFilePath}`,
+    {cwd: workspaceRoot},
+    (err, stdout, stderr) => {
+      if (err) {
+        console.log(stdout);
+        console.log(stderr);
+        console.warn(`Formatting of ${bzlFilePath} and ${jsonFilePath} failed: ${err.message}`);
+      }
+    },
+  );
 }
 
 async function main() {