Revert "chore(deps): update pnpm to v11 (#5660)"

This reverts commit b8e0123893.

.github/renovate.json5

@@ -22,7 +22,7 @@
       automerge: true,
     },
     {
-      // disallow automerge for dependencies requiring postinstall scripts
+      // disallow automerge for onlyBuiltDependencies
       matchPackageNames: [
         "@tree-sitter-grammars/tree-sitter-yaml",
         "bcrypt",
@@ -39,7 +39,7 @@
   ],
   // Updates lockfile for prebuilt-debian after if package.json is updated, otherwise only root lockfile is updated
   postUpgradeTasks: {
-    commands: ["cd deployments/prebuilt-debian && pnpm install --lockfile-only"],
+    commands: ["cd deployments/prebuilt-debian && pnpm install --ignore-workspace --lockfile-only"],
     fileFilters: ["deployments/prebuilt-debian/pnpm-lock.yaml"],
     executionMode: "update",
   },