Bump ripple-keypairs from 0.11.0 to 0.11.1 (#1190)

Bumps [ripple-keypairs](https://github.com/ripple/ripple-keypairs) from 0.11.0 to 0.11.1.
- [Release notes](https://github.com/ripple/ripple-keypairs/releases)
- [Changelog](https://github.com/ripple/ripple-keypairs/blob/0.11.1/HISTORY.md)
- [Commits](https://github.com/ripple/ripple-keypairs/compare/0.11.0...0.11.1)

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

yarn.lock

@@ -1550,7 +1550,7 @@ ejs@^3.0.1:
   resolved "https://registry.yarnpkg.com/ejs/-/ejs-3.0.1.tgz#30c8f6ee9948502cc32e85c37a3f8b39b5a614a5"
   integrity sha512-cuIMtJwxvzumSAkqaaoGY/L6Fc/t6YvoP9/VIaK0V/CyqKLEQ8sqODmYfy/cjXEdZ9+OOL8TecbJu+1RsofGDw==
 
-elliptic@^6.0.0:
+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==
@@ -1563,19 +1563,6 @@ elliptic@^6.0.0:
     minimalistic-assert "^1.0.0"
     minimalistic-crypto-utils "^1.0.0"
 
-elliptic@^6.4.0:
-  version "6.5.1"
-  resolved "https://registry.yarnpkg.com/elliptic/-/elliptic-6.5.1.tgz#c380f5f909bf1b9b4428d028cd18d3b0efd6b52b"
-  integrity sha512-xvJINNLbTeWQjrl6X+7eQCrIy/YPv5XCpKW6kB5mKvtnGILoLDcySuwomfdzt0BMdLNVnuRNTuzKNHj0bva1Cg==
-  dependencies:
-    bn.js "^4.4.0"
-    brorand "^1.0.1"
-    hash.js "^1.0.0"
-    hmac-drbg "^1.0.0"
-    inherits "^2.0.1"
-    minimalistic-assert "^1.0.0"
-    minimalistic-crypto-utils "^1.0.0"
-
 emoji-regex@^7.0.1:
   version "7.0.3"
   resolved "https://registry.yarnpkg.com/emoji-regex/-/emoji-regex-7.0.3.tgz#933a04052860c85e83c122479c4748a8e4c72156"
@@ -4173,14 +4160,14 @@ ripple-binary-codec@^0.2.5:
     ripple-address-codec "^4.0.0"
 
 ripple-keypairs@^0.11.0:
-  version "0.11.0"
-  resolved "https://registry.yarnpkg.com/ripple-keypairs/-/ripple-keypairs-0.11.0.tgz#ee9f4172d615106f4d3c0af15805960742dab045"
-  integrity sha512-kzYwlWaLu1fl+StJdfZuEmcooJI18QuWxatII+Rcd3QeWXne16ml7N1e4HpYI/aJ69Cn4npsJef7kHSaA83Fgg==
+  version "0.11.1"
+  resolved "https://registry.yarnpkg.com/ripple-keypairs/-/ripple-keypairs-0.11.1.tgz#e8637c9d577a579c311138c7848cdc5928908979"
+  integrity sha512-xdakxb+/4yo3TWA2ZImEma3g9OZrvoVRMDC9A2dfk6V+tBsDWug1p53bfmSnfTaue7kf2O5ejq2bfmYG8W08FA==
   dependencies:
     babel-runtime "^5.8.20"
     bn.js "^3.1.1"
     brorand "^1.0.5"
-    elliptic "^6.4.0"
+    elliptic "^6.5.2"
     hash.js "^1.0.3"
     ripple-address-codec "^2.0.1"