Rebuild precompiled SELinux file contexts after upgrade

SELinux file contexts are based on paths containing regular expressions. To speed up the initial loading of the SELinux label database the regular expressions are precompiled into a binary file. To avoid issues with incompatible binary format changes the binary file context files include the PCRE2 version they were compiled with. Update those binary file context files after upgrade of libpcre2-8 so newly started programs can continue to use the precomiled ones and do not warn about them being outdated, e.g. dpkg:

dpkg: warning: selinux: Regex version mismatch, expected: 10.42 2022-12-11 actual: 10.40 2022-04-14

/cc @bigon @etbe @selinux-team