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.

.github/workflows/release.yml

@@ -39,6 +39,11 @@ jobs:
         with:
           python-version: '3.12'
 
+      # pyscard has no manylinux wheels, so it builds from source on Linux
+      # and needs the PC/SC development headers.
+      - name: Install the PC/SC development headers
+        run: sudo apt-get update && sudo apt-get install -y libpcsclite-dev
+
       - name: Install pysim and the test dependencies
         working-directory: simple
         run: |