fix: remove unnecessary quotes from vitest-dev override in upgrade script (#1368)

## Summary
- The upgrade script was wrapping the `vitest-dev` override value in
single quotes (`'npm:vitest@^x.y.z'`), but `pnpm-workspace.yaml` stores
it unquoted (`npm:vitest@^x.y.z`)
- This caused a spurious formatting change on every automated upgrade
run

Closes #1367

Author: fengmk2

.github/scripts/upgrade-deps.mjs

@@ -61,10 +61,9 @@ async function updatePnpmWorkspace(versions) {
   let content = fs.readFileSync(filePath, 'utf8');
 
   // Update vitest-dev override (handle pre-release versions like -beta.1, -rc.0)
-  // Handle both quoted ('npm:vitest@^...') and unquoted (npm:vitest@^...) forms
   content = content.replace(
-    /vitest-dev: '?npm:vitest@\^[\d.]+(-[\w.]+)?'?/,
-    `vitest-dev: 'npm:vitest@^${versions.vitest}'`,
+    /vitest-dev: npm:vitest@\^[\d.]+(-[\w.]+)?/,
+    `vitest-dev: npm:vitest@^${versions.vitest}`,
   );
 
   // Update tsdown in catalog (handle pre-release versions)