Rebasehelper

Fixed
- Fixed mocking of macros in the test suite

Fixed
- Fixed broken **commit-hash-updater** SPEC hook

Changed
- Changed handling of `%patch` macros to use the specfile library

Fixed
- Replaced `%patchN` macros (obsoleted in `rpm` 4.20) in test files with supported variants

Changed
- Removed dependency on obsoleted setuptools_scm_git_archive

Fixed
- *debuginfo* packages are now skipped when running **sonamecheck**

Changed
- Replaced our own implementation of lookaside cache client with *rpkg*
- Switched from docker to podman in GitHub Actions
- Added a 30 seconds time limit to bugzilla queries
- Dropped support for Python < 3.9 and EPEL 8
- Switched to [specfile](https://github.com/packit/specfile) library

Removed
- Removed `--keep-comments` option

Added
- Added support for `rpmuncompress` being used by `rpm` >= 4.18

Fixed
- Replaced hardcoded references to *master* branch
- Fixed typos in `%preun`, `%postun` and `%generate_buildrequires` section names
- Fixed parsing of macros with multiline bodies in `%dump` output
- Fixed parsing issue in **rpmdiff** checker
- **rebase-helper** now removes any existing submodule configuration from upstream tarballs before rebasing to avoid errors due to submodules not being checked out

Changed
- **rebase-helper** now warns about a potential rename that can't be handled automatically, such as `README` to `README.md`
- **rebase-helper** is now able to handle unexpected `git rebase` errors