Update dependency ajv to v6.4.0

package.json

@@ -11,7 +11,7 @@
     "yarn": "1.x"
   },
   "dependencies": {
-    "ajv": "6.3.0",
+    "ajv": "6.4.0",
     "angular": "1.6.9",
     "angular-clipboard": "1.6.2",
     "angular-local-storage": "0.7.1",

yarn.lock

@@ -60,13 +60,14 @@ ajv-keywords@^1.0.0, ajv-keywords@^1.1.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/ajv-keywords/-/ajv-keywords-1.5.1.tgz#314dd0a4b3368fad3dfcdc54ede6171b886daf3c"
 
-ajv@6.3.0:
-  version "6.3.0"
-  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.3.0.tgz#1650a41114ef00574cac10b8032d8f4c14812da7"
+ajv@6.4.0:
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/ajv/-/ajv-6.4.0.tgz#d3aff78e9277549771daf0164cff48482b754fc6"
   dependencies:
     fast-deep-equal "^1.0.0"
     fast-json-stable-stringify "^2.0.0"
     json-schema-traverse "^0.3.0"
+    uri-js "^3.0.2"
 
 ajv@^4.7.0, ajv@^4.9.1:
   version "4.11.8"
@@ -5977,6 +5978,10 @@ punycode@^1.2.4, punycode@^1.4.1:
   version "1.4.1"
   resolved "https://registry.yarnpkg.com/punycode/-/punycode-1.4.1.tgz#c0d5a63b2718800ad8e1eb0fa5269c84dd41845e"
 
+punycode@^2.1.0:
+  version "2.1.0"
+  resolved "https://registry.yarnpkg.com/punycode/-/punycode-2.1.0.tgz#5f863edc89b96db09074bad7947bf09056ca4e7d"
+
 q@^1.1.2:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/q/-/q-1.5.1.tgz#7e32f75b41381291d04611f1bf14109ac00651d7"
@@ -7368,6 +7373,12 @@ upper-case@^1.1.1:
   version "1.1.3"
   resolved "https://registry.yarnpkg.com/upper-case/-/upper-case-1.1.3.tgz#f6b4501c2ec4cdd26ba78be7222961de77621598"
 
+uri-js@^3.0.2:
+  version "3.0.2"
+  resolved "https://registry.yarnpkg.com/uri-js/-/uri-js-3.0.2.tgz#f90b858507f81dea4dcfbb3c4c3dbfa2b557faaa"
+  dependencies:
+    punycode "^2.1.0"
+
 urix@^0.1.0:
   version "0.1.0"
   resolved "https://registry.yarnpkg.com/urix/-/urix-0.1.0.tgz#da937f7a62e21fec1fd18d49b35c2935067a6c72"