Upgrade to release 2.2.1:
- Enable mypy to discover type hints as specified in PEP 561
- [ci] Set the expected Python version when building release files
- [ci] Update actions versions in use
- [watchmedo] [regression] Fix usage of missing signal.SIGHUP
attribute on non-Unix OSes
Signed-off-by: Leon Anavi <leon.anavi@konsulko.com>
Signed-off-by: Khem Raj <raj.khem@gmail.com>
