Bump elliptic from 6.5.5 to 6.6.0 in /ui

Bumps [elliptic](https://github.com/indutny/elliptic) from 6.5.5 to 6.6.0.
- [Commits](https://github.com/indutny/elliptic/compare/v6.5.5...v6.6.0)

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

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

ui/yarn.lock

@@ -6234,9 +6234,9 @@ electron-to-chromium@^1.3.47, electron-to-chromium@^1.4.796:
   integrity sha512-eGvIk2V0dGImV9gWLq8fDfTTsCAeMDwZqEPMr+jMInxZdnp9Us8UpovYpRCf9NQ7VOFgrN2doNSgvISbsbNpxA==
 
 elliptic@^6.5.3, elliptic@^6.5.5:
-  version "6.5.5"
+  version "6.6.0"
-  resolved "https://registry.npmjs.org/elliptic/-/elliptic-6.5.5.tgz#c715e09f78b6923977610d4c2346d6ce22e6dded"
+  resolved "https://registry.npmjs.org/elliptic/-/elliptic-6.6.0.tgz#5919ec723286c1edf28685aa89261d4761afa210"
-  integrity sha512-7EjbcmUm17NQFu4Pmgmq2olYMj8nwMnpcddByChSUjArp8F5DQWcIcpriwO4ZToLNAJig0yiyjswfyGNje/ixw==
+  integrity sha512-dpwoQcLc/2WLQvJvLRHKZ+f9FgOdjnq11rurqwekGQygGPsYSK29OMMD2WalatiqQ+XGFDglTNixpPfI+lpaAA==
   dependencies:
     bn.js "^4.11.9"
     brorand "^1.1.0"