Bump apollo-server in /graphql-server/drivers/arangodb

Bumps [apollo-server](https://github.com/apollographql/apollo-server) from 2.13.0 to 2.14.3.
- [Release notes](https://github.com/apollographql/apollo-server/releases)
- [Changelog](https://github.com/apollographql/apollo-server/blob/master/CHANGELOG.md)
- [Commits](https://github.com/apollographql/apollo-server/compare/[email protected]@2.14.3)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

graphql-server/drivers/arangodb/package.json

@@ -14,7 +14,7 @@
   "author": "",
   "license": "ISC",
   "dependencies": {
-    "apollo-server": "2.13.0",
+    "apollo-server": "2.14.3",
     "apollo-link-http": "1.5.17",
     "graphql": "^14.2.1",
     "graphql-tools": "5.0.0",