libpathrs v0.1.3 -- "自動化って物は試しとすればいい物だ"

This is the third patch release of the 0.1.z branch of libpathrs. This
only includes a few small fixes, but is mainly intended to just test
that our automated release GitHub Actions correctly work on a real
release in the main repo.

• gha: our Rust crate and Python bindings are now uploaded automatically from a
  GitHub action when a tag is pushed.

• syscalls: the pretty-printing of openat2 errors now gives a string
  description of the flags passed rather that just a hex value (to match other
  syscalls).

• python bindings: restrict how our methods and functions can be called using
  / and * to reduce the possibility of future breakages if we rename or
  re-order some of our arguments.

Thanks to the following people who made this release possible:

• Aleksa Sarai [email protected]

Signed-off-by: Aleksa Sarai [email protected]