chore(deps): bump elliptic from 6.5.7 to 6.6.1

Bumps [elliptic](https://github.com/indutny/elliptic) from 6.5.7 to 6.6.1.
- [Commits](indutny/elliptic@v6.5.7...v6.6.1)

---
updated-dependencies:
- dependency-name: elliptic
  dependency-type: indirect
...

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

yarn.lock

@@ -6417,9 +6417,9 @@ element-ui@2.13.1:
     throttle-debounce "^1.0.1"
 
 elliptic@^6.5.3, elliptic@^6.5.4:
-  version "6.5.7"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.7.tgz#8ec4da2cb2939926a1b9a73619d768207e647c8b"
-  integrity sha512-ESVCtTwiA+XhY3wyh24QqRGBoP3rEdDUl3EDUUo9tft074fi19IrdpH7hLCMMP3CIj7jb3W96rn8lt/BqIlt5Q==
+  version "6.6.1"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.6.1.tgz#3b8ffb02670bf69e382c7f65bf524c97c5405c06"
+  integrity sha512-RaddvvMatK2LJHqFJ+YA4WysVN5Ita9E35botqIYspQ4TkRAlCicdzKOjlyv/1Za5RyTNn7di//eEV0uTAfe3g==
   dependencies:
     bn.js "^4.11.9"
     brorand "^1.1.0"