chore(deps): bump circomkit from 0.1.0 to 0.2.1

Bumps [circomkit](https://github.com/erhant/circomkit) from 0.1.0 to 0.2.1.
- [Release notes](https://github.com/erhant/circomkit/releases)
- [Commits](erhant/circomkit@v0.1.0...v0.2.1)

---
updated-dependencies:
- dependency-name: circomkit
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

circuits/package.json

@@ -36,7 +36,7 @@
   },
   "dependencies": {
     "@zk-kit/circuits": "^0.4.0",
-    "circomkit": "^0.1.0",
+    "circomkit": "^0.2.1",
     "circomlib": "^2.0.5",
     "maci-core": "1.2.2",
     "maci-crypto": "1.2.2",