niv candid: update 42ffed66 -> 0ae3c22c (#3890)

## Changelog for candid:
Branch: master
Commits: [dfinity/candid@42ffed66...0ae3c22c](dfinity/candid@42ffed6...0ae3c22)

* [`0ae3c22c`](dfinity/candid@0ae3c22) Add type decoder fuzzer ([dfinity/candid⁠#414](https://togithub.com/dfinity/candid/issues/414))

nix/sources.json

@@ -6,10 +6,10 @@
         "homepage": "",
         "owner": "dfinity",
         "repo": "candid",
-        "rev": "42ffed660ded37585c4b9f97e3ce90919e24c518",
-        "sha256": "1hpvkk8f98vzz7fzbd6q8xw9l89ybb87yxmw421skkdgpx6sakky",
+        "rev": "0ae3c22c6df17f7e09fb49c5ce5fe77653884e10",
+        "sha256": "0m7pvm4sawamixm30dqx4zlf8vr3966fdpbgad5qjc0zzpzazq51",
         "type": "tarball",
-        "url": "https://github.com/dfinity/candid/archive/42ffed660ded37585c4b9f97e3ce90919e24c518.tar.gz",
+        "url": "https://github.com/dfinity/candid/archive/0ae3c22c6df17f7e09fb49c5ce5fe77653884e10.tar.gz",
         "url_template": "https://github.com/<owner>/<repo>/archive/<rev>.tar.gz"
     },
     "esm": {