Bumps [github/issue-metrics](https://github.com/github/issue-metrics) from 3.19.0 to 3.20.0.
- [Release notes](https://github.com/github/issue-metrics/releases)
- [Commits](0bac475850...6a0f49b4e1)
---
updated-dependencies:
- dependency-name: github/issue-metrics
dependency-version: 3.20.0
dependency-type: direct:production
update-type: version-update:semver-minor
...
Signed-off-by: dependabot[bot] <support@github.com>