v3.31.1: the Linux PC/SC headers (pyscard builds from source)

The first release run failed installing the test dependencies:
pyscard 2.3.1 publishes macOS and Windows wheels only (no manylinux),
so on Linux it always builds from source and needs the PC/SC headers -
the job stopped at "winscard.h: No such file or directory".

- The release workflow installs libpcsclite-dev before the dependencies.
- The READMEs and setup.sh name the header package next to pcscd/ccid:
  libpcsclite-dev (Debian/Ubuntu), pcsc-lite-devel (Fedora), included
  in Arch's pcsclite.  This affects every Linux user running setup, not
  just CI.
- Version strings + the PWA cache bumped together (simple-v456).

No runtime change: 997 Python + 953 frontend green; the release package
test builds with the new version.

pyproject.toml

@@ -4,7 +4,7 @@ build-backend = "setuptools.build_meta"
 
 [project]
 name = "pysim-simple-server"
-version = "3.31.0"
+version = "3.31.1"
 description = "HTTP REST server wrapping pysim for the SIMple PWA"
 license = { text = "GPL-2.0-or-later" }
 requires-python = ">=3.9"