This release brings in:

- Make golang 1.20.4 the default for development (https://gitlab.com/gitlab-org/gitlab-metrics-exporter/-/merge_requests/42)
- Bump go to 1.19.9 (https://gitlab.com/gitlab-org/gitlab-metrics-exporter/-/merge_requests/41)
- Bump Go x-sys to latest version (https://gitlab.com/gitlab-org/gitlab-metrics-exporter/-/merge_requests/40)
- Update go.mod to Go 1.19 (https://gitlab.com/gitlab-org/gitlab-metrics-exporter/-/merge_requests/39)
- Add Go 1.19 and 1.20 support (https://gitlab.com/gitlab-org/gitlab-metrics-exporter/-/merge_requests/38)
- Makefile: Don't use hardcoded path to Bash shell (https://gitlab.com/gitlab-org/gitlab-metrics-exporter/-/merge_requests/37)