Bump apollo-link-http from 1.5.15 to 1.5.16 in /js

Bumps [apollo-link-http](https://github.com/apollographql/apollo-link) from 1.5.15 to 1.5.16.
- [Release notes](https://github.com/apollographql/apollo-link/releases)
- [Changelog](https://github.com/apollographql/apollo-link/blob/master/CHANGELOG.md)
- [Commits](https://github.com/apollographql/apollo-link/compare/apollo-link-http@1.5.15...apollo-link-http@1.5.16)

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

js/package.json

@@ -16,7 +16,7 @@
     "apollo-cache-inmemory": "^1.5.1",
     "apollo-client": "^2.5.1",
     "apollo-link": "^1.2.11",
-    "apollo-link-http": "^1.5.14",
+    "apollo-link-http": "^1.5.16",
     "buefy": "^0.8.2",
     "graphql": "^14.2.1",
     "graphql-tag": "^2.10.1",