⬆️ Bump graphql from 14.6.0 to 15.1.0

Bumps [graphql](https://github.com/graphql/graphql-js) from 14.6.0 to 15.1.0.
- [Release notes](https://github.com/graphql/graphql-js/releases)
- [Commits](https://github.com/graphql/graphql-js/compare/v14.6.0...v15.1.0)

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

package-lock.json

@@ -7235,12 +7235,9 @@
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         },
         "graphql": {
-            "version": "14.6.0",
-            "resolved": "https://registry.npmjs.org/graphql/-/graphql-14.6.0.tgz",
-            "integrity": "sha512-VKzfvHEKybTKjQVpTFrA5yUq2S9ihcZvfJAtsDBBCuV6wauPu1xl/f9ehgVf0FcEJJs4vz6ysb/ZMkGigQZseg==",
-            "requires": {
-                "iterall": "^1.2.2"
-            }
+            "version": "15.1.0",
+            "resolved": "https://registry.npmjs.org/graphql/-/graphql-15.1.0.tgz",
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         },
         "graphql-language-service-interface": {
             "version": "2.4.0",
@@ -8372,11 +8369,6 @@
             "integrity": "sha1-R+Y/evVa+m+S4VAOaQ64uFKcCZo=",
             "dev": true
         },
-        "iterall": {
-            "version": "1.3.0",
-            "resolved": "https://registry.npmjs.org/iterall/-/iterall-1.3.0.tgz",
-            "integrity": "sha512-QZ9qOMdF+QLHxy1QIpUHUU1D5pS2CG2P69LF6L6CPjPYA/XMOmKV3PZpawHoAjHNyB0swdVTRxdYT4tbBbxqwg=="
-        },
         "jest-worker": {
             "version": "25.2.1",
             "resolved": "https://registry.npmjs.org/jest-worker/-/jest-worker-25.2.1.tgz",