chore(deps): update dependency graphql-middleware to v1.7.8

Author: renovate-bot

package.json

@@ -27,7 +27,7 @@
     "@types/graphql": "0.13.4",
     "ava": "0.25.0",
     "graphql": "0.13.2",
-    "graphql-middleware": "1.7.7",
+    "graphql-middleware": "1.7.8",
     "graphql-tools": "4.0.2",
     "prettier": "1.14.3",
     "prettier-check": "2.0.0",

yarn.lock

@@ -1840,13 +1840,13 @@ graceful-fs@^4.1.11, graceful-fs@^4.1.2, graceful-fs@^4.1.6:
   version "4.1.11"
   resolved "https://registry.yarnpkg.com/graceful-fs/-/graceful-fs-4.1.11.tgz#0e8bdfe4d1ddb8854d64e04ea7c00e2a026e5658"
 
-graphql-middleware@1.7.7:
-  version "1.7.7"
-  resolved "https://registry.yarnpkg.com/graphql-middleware/-/graphql-middleware-1.7.7.tgz#0a7a7193a873c4769401df2aef4ffb9c6ca97f43"
+graphql-middleware@1.7.8:
+  version "1.7.8"
+  resolved "https://registry.yarnpkg.com/graphql-middleware/-/graphql-middleware-1.7.8.tgz#617940d3cd462e9553e582d2b6ce86cb0e95a3dd"
   dependencies:
-    graphql-tools "^4.0.1"
+    graphql-tools "^4.0.2"
 
-graphql-tools@4.0.2:
+graphql-tools@4.0.2, graphql-tools@^4.0.2:
   version "4.0.2"
   resolved "https://registry.yarnpkg.com/graphql-tools/-/graphql-tools-4.0.2.tgz#9da22974cc6bf6524ed4f4af35556fd15aa6516d"
   dependencies:
@@ -1856,16 +1856,6 @@ graphql-tools@4.0.2:
     iterall "^1.1.3"
     uuid "^3.1.0"
 
-graphql-tools@^4.0.1:
-  version "4.0.1"
-  resolved "https://registry.yarnpkg.com/graphql-tools/-/graphql-tools-4.0.1.tgz#c995a4e25c2967d108c975e508322d12969c8c0e"
-  dependencies:
-    apollo-link "^1.2.3"
-    apollo-utilities "^1.0.1"
-    deprecated-decorator "^0.1.6"
-    iterall "^1.1.3"
-    uuid "^3.1.0"
-
 graphql@0.13.2:
   version "0.13.2"
   resolved "https://registry.yarnpkg.com/graphql/-/graphql-0.13.2.tgz#4c740ae3c222823e7004096f832e7b93b2108270"