Bump sebastian/exporter from 4.0.7 to 4.0.8

Bumps [sebastian/exporter](https://github.com/sebastianbergmann/exporter) from 4.0.7 to 4.0.8.
- [Release notes](https://github.com/sebastianbergmann/exporter/releases)
- [Changelog](https://github.com/sebastianbergmann/exporter/blob/4.0.8/ChangeLog.md)
- [Commits](sebastianbergmann/exporter@4.0.7...4.0.8)

---
updated-dependencies:
- dependency-name: sebastian/exporter
  dependency-version: 4.0.8
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]