Bump elliptic from 6.5.4 to 6.6.1

Bumps [elliptic](https://github.com/indutny/elliptic) from 6.5.4 to 6.6.1.
- [Commits](indutny/elliptic@v6.5.4...v6.6.1)

---
updated-dependencies:
- dependency-name: elliptic
  dependency-version: 6.6.1
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

yarn.lock

@@ -788,9 +788,9 @@ duplexify@^3.4.2, duplexify@^3.6.0:
     stream-shift "^1.0.0"
 
 elliptic@^6.0.0:
-  version "6.5.4"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.4.tgz#da37cebd31e79a1367e941b592ed1fbebd58abbb"
-  integrity sha512-iLhC6ULemrljPZb+QutR5TQGB+pdW6KGD5RSegS+8sorOZT+rdQFbsQFJgvN3eRqNALqJer4oQ16YvJHlU8hzQ==
+  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"