chore(deps): update pnpm to v11.6.0 (#1657)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package.json

@@ -2,7 +2,7 @@
   "name": "terraform-github-devtools",
   "private": true,
   "description": "Development tool dependencies for terraform-github (run via lefthook).",
-  "packageManager": "pnpm@11.5.2",
+  "packageManager": "pnpm@11.6.0",
   "devDependencies": {
     "@biomejs/biome": "2.5.0",
     "cspell": "10.0.1",