chore(deps): bump elliptic from 6.5.4 to 6.5.7

Bumps [elliptic](https://github.com/indutny/elliptic) from 6.5.4 to 6.5.7.
- [Commits](indutny/elliptic@v6.5.4...v6.5.7)

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

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

Author: dependabot[bot]

package-lock.json

@@ -711,8 +711,8 @@ dot-prop@^5.1.0:
     is-obj "^2.0.0"
 
 elliptic@^6.5.4:
-  version "6.5.4"
-  resolved "https://registry.npmjs.org/elliptic/-/elliptic-6.5.4.tgz"
+  version "6.5.7"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.7.tgz#8ec4da2cb2939926a1b9a73619d768207e647c8b"
   dependencies:
     bn.js "^4.11.9"
     brorand "^1.1.0"