chore(deps): update claude-code to v2.0.21

- Bumped `claude-code` package version from `2.0.11` to `2.0.21`.
- Updated `package-lock.json`, hashes, and dependencies for consistency.

overlays/unstable/claude-code/package-lock.json

@@ -6,13 +6,13 @@
   "packages": {
     "": {
       "dependencies": {
-        "@anthropic-ai/claude-code": "^2.0.11"
+        "@anthropic-ai/claude-code": "^2.0.21"
       }
     },
     "node_modules/@anthropic-ai/claude-code": {
-      "version": "2.0.11",
-      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-code/-/claude-code-2.0.11.tgz",
-      "integrity": "sha512-DBQd5znEJn11JsmqFOhjTeSO6oihxPkl9KiHxsvc1kbyQKUNVRLFnaAjUfGUOktmWLN+d7e3vbIRKhHtXoA0BQ==",
+      "version": "2.0.21",
+      "resolved": "https://registry.npmjs.org/@anthropic-ai/claude-code/-/claude-code-2.0.21.tgz",
+      "integrity": "sha512-02NcxPVjioLjo4/djzIt4aAYkYqnZsHgdzgMexLURYLR9q1+B+OLkKddKwOHL8fas3WnUGV1oyybu73BfHqQ4A==",
       "license": "SEE LICENSE IN README.md",
       "bin": {
         "claude": "cli.js"