fix: add apollo-boost dependency

packages/gatsby-source-prismic-graphql/package.json

@@ -40,6 +40,7 @@
     "react": "^16.0.0"
   },
   "dependencies": {
+    "apollo-boost": "^0.3.1",
     "apollo-link-context": "^1.0.17",
     "gatsby-source-graphql": "^2.0.15",
     "gatsby-source-graphql-universal": "^3.0.7",

yarn.lock

@@ -2250,7 +2250,22 @@ apollo-boost@^0.1.23:
     graphql-tag "^2.4.2"
     tslib "^1.9.3"
 
-apollo-cache-inmemory@^1.4.3:
+apollo-boost@^0.3.1:
+  version "0.3.1"
+  resolved "https://registry.yarnpkg.com/apollo-boost/-/apollo-boost-0.3.1.tgz#b6a896e020a0eab7e415032fe565734a955c65f8"
+  integrity sha512-VdXcTMxLBeNvANW/FtiarEkrRr/cepYKG6wTAURdy8CS33WYpEHtIg9S8tAjxwVzIECpE4lWyDKyPLoESJ072Q==
+  dependencies:
+    apollo-cache "^1.2.1"
+    apollo-cache-inmemory "^1.5.1"
+    apollo-client "^2.5.1"
+    apollo-link "^1.0.6"
+    apollo-link-error "^1.0.3"
+    apollo-link-http "^1.3.1"
+    graphql-tag "^2.4.2"
+    ts-invariant "^0.2.1"
+    tslib "^1.9.3"
+
+apollo-cache-inmemory@^1.4.3, apollo-cache-inmemory@^1.5.1:
   version "1.5.1"
   resolved "https://registry.yarnpkg.com/apollo-cache-inmemory/-/apollo-cache-inmemory-1.5.1.tgz#265d1ee67b0bf0aca9c37629d410bfae44e62953"
   integrity sha512-D3bdpPmWfaKQkWy8lfwUg+K8OBITo3sx0BHLs1B/9vIdOIZ7JNCKq3EUcAgAfInomJUdN0QG1yOfi8M8hxkN1g==
@@ -2269,7 +2284,7 @@ [email protected], apollo-cache@^1.1.26, apollo-cache@^1.2.1:
     apollo-utilities "^1.2.1"
     tslib "^1.9.3"
 
-apollo-client@^2.4.13:
+apollo-client@^2.4.13, apollo-client@^2.5.1:
   version "2.5.1"
   resolved "https://registry.yarnpkg.com/apollo-client/-/apollo-client-2.5.1.tgz#36126ed1d32edd79c3713c6684546a3bea80e6d1"
   integrity sha512-MNcQKiqLHdGmNJ0rZ0NXaHrToXapJgS/5kPk0FygXt+/FmDCdzqcujI7OPxEC6e9Yw5S/8dIvOXcRNuOMElHkA==