Update dependency graphql to v15

package.json

@@ -28,15 +28,15 @@
     ]
   },
   "resolutions": {
-    "graphql": "14.7.0"
+    "graphql": "15.3.0"
   },
   "dependencies": {
     "@apollo/react-hooks": "3.1.5",
     "apollo-boost": "0.4.9",
     "dayjs": "1.9.3",
     "expo": "34.0.4",
     "expo-blur": "6.0.0",
-    "graphql": "14.7.0",
+    "graphql": "15.3.0",
     "graphql-tag": "2.11.0",
     "polished": "3.6.7",
     "react": "16.14.0",

yarn.lock

@@ -5721,12 +5721,10 @@ [email protected]:
     tslib "^1.11.1"
     uuid "^7.0.3"
 
-[email protected]:
-  version "14.7.0"
-  resolved "https://registry.yarnpkg.com/graphql/-/graphql-14.7.0.tgz#7fa79a80a69be4a31c27dda824dc04dac2035a72"
-  integrity sha512-l0xWZpoPKpppFzMfvVyFmp9vLN7w/ZZJPefUicMCepfJeQ8sMcztloGYY9DfjVPo6tIUDzU5Hw3MUbIjj9AVVA==
-  dependencies:
-    iterall "^1.2.2"
+[email protected]:
+  version "15.3.0"
+  resolved "https://registry.yarnpkg.com/graphql/-/graphql-15.3.0.tgz#3ad2b0caab0d110e3be4a5a9b2aa281e362b5278"
+  integrity sha512-GTCJtzJmkFLWRfFJuoo9RWWa/FfamUHgiFosxi/X1Ani4AVWbeyBenZTNX6dM+7WSbbFfTo/25eh0LLkwHMw2w==
 
 growly@^1.3.0:
   version "1.3.0"
@@ -6563,11 +6561,6 @@ iterall@^1.2.1, iterall@^1.3.0:
   resolved "https://registry.yarnpkg.com/iterall/-/iterall-1.3.0.tgz#afcb08492e2915cbd8a0884eb93a8c94d0d72fea"
   integrity sha512-QZ9qOMdF+QLHxy1QIpUHUU1D5pS2CG2P69LF6L6CPjPYA/XMOmKV3PZpawHoAjHNyB0swdVTRxdYT4tbBbxqwg==
 
-iterall@^1.2.2:
-  version "1.2.2"
-  resolved "https://registry.yarnpkg.com/iterall/-/iterall-1.2.2.tgz#92d70deb8028e0c39ff3164fdbf4d8b088130cd7"
-  integrity sha512-yynBb1g+RFUPY64fTrFv7nsjRrENBQJaX2UL+2Szc9REFrSNm1rpSXHGzhmAy7a9uv3vlvgBlXnf9RqmPH1/DA==
-
 jest-changed-files@^24.9.0:
   version "24.9.0"
   resolved "https://registry.yarnpkg.com/jest-changed-files/-/jest-changed-files-24.9.0.tgz#08d8c15eb79a7fa3fc98269bc14b451ee82f8039"