fix(deps): update dependency graphql to ^15.7.2

Author: renovate-bot

package.json

@@ -65,7 +65,7 @@
   "dependencies": {
     "@sourcegraph/extension-api-classes": "^1.1.0",
     "@types/sinon": "10.0.4",
-    "graphql": "^15.4.0",
+    "graphql": "^15.7.2",
     "rxjs": "^6.5.1",
     "sinon": "^10.0.0",
     "sourcegraph": "^25.4.0"

yarn.lock

@@ -3107,7 +3107,7 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.15, graceful-fs@^4.1.2, graceful-fs@^4.1.6
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.2.4.tgz#2256bde14d3632958c465ebc96dc467ca07a29fb"
   integrity sha512-WjKPNJF79dtJAVniUlGGWHYGz2jWxT6VhN/4m1NdkbZ2nOsEF+cI1Edgql5zCRhs/VsQYRvrXctxktVXZUkixw==
 
-graphql@^15.4.0:
+graphql@^15.7.2:
   version "15.7.2"
   resolved "https://registry.yarnpkg.com/graphql/-/graphql-15.7.2.tgz#85ab0eeb83722977151b3feb4d631b5f2ab287ef"
   integrity sha512-AnnKk7hFQFmU/2I9YSQf3xw44ctnSFCfp3zE0N6W174gqe9fWG/2rKaKxROK7CcI3XtERpjEKFqts8o319Kf7A==