Bug#1146643: RFS: palmer-mail/1.4.0-1 [ITP] -- native email and calendar client for Linux

[Norwid Behrnd]

I didn't attempt to test the MUA already because of the present shape of
`pyproject.toml` in general and the requirement of `pytest` with only
`pytest>=8.0` in particular.  It still might be functional, but feels "off" as
in "the package did not receive enough care" for a package to be introduced in
2026 into the Debian ecosystem.