Slow performance on field ProjectType.packages if github/npm metadata has expired

**Describe the bug**
When the metadata is considered expired (currently after 6 hours), the resolver fetches new data from both NPM and GitHub APIs, slowing down the whole query. This work should be offloaded to a parallel "job" and old data shall be returned immediately unless there isn't any metadata (freshly added package).

**To Reproduce**
Steps to reproduce the behavior:
1. Wait 6 hours
2. Refresh a project type view page

**Expected behavior**
Lightning fast loading :zap:

**Screenshots**

Here we can see a 1.7s long example on Apollo Engine: