Bump elliptic from 6.5.2 to 6.5.3 in /example

Bumps [elliptic](https://github.com/indutny/elliptic) from 6.5.2 to 6.5.3.
- [Release notes](https://github.com/indutny/elliptic/releases)
- [Commits](indutny/elliptic@v6.5.2...v6.5.3)

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

Author: dependabot[bot]

example/yarn.lock

@@ -2323,9 +2323,9 @@ electron-to-chromium@^1.3.413:
   integrity sha512-WOr3SrZ55lUFYugA6sUu3H3ZoxVIH5o3zTSqYS+2DOJJP4hnHmBiD1w432a2YFW/H2G5FIxE6DB06rv+9dUL5g==
 
 elliptic@^6.0.0, elliptic@^6.5.2:
-  version "6.5.2"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.2.tgz#05c5678d7173c049d8ca433552224a495d0e3762"
-  integrity sha512-f4x70okzZbIQl/NSRLkI/+tteV/9WqL98zx+SQ69KbXxmVrmjwsNUPn/gYJJ0sHvEak24cZgHIPegRePAtA/xw==
+  version "6.5.3"
+  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.3.tgz#cb59eb2efdaf73a0bd78ccd7015a62ad6e0f93d6"
+  integrity sha512-IMqzv5wNQf+E6aHeIqATs0tOLeOTwj1QKbRcS3jBbYkl5oLAserA8yJTT7/VyHUYG91PRmPyeQDObKLPpeS4dw==
   dependencies:
     bn.js "^4.4.0"
     brorand "^1.0.1"