Bump requirejs from 2.3.7 to 2.3.8

Bumps [requirejs](https://github.com/jrburke/r.js) from 2.3.7 to 2.3.8.
- [Commits](requirejs/r.js@2.3.7...2.3.8)

---
updated-dependencies:
- dependency-name: requirejs
  dependency-version: 2.3.8
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]