Enhancement: glibc: support trailing development patch versions

[lovell]

Pre-release versions of the future Fedora Rawhide 38 are now including development/unreleased versions of glibc with a trailing patch version e.g. 2.36.9000

https://packages.fedoraproject.org/pkgs/glibc/glibc/fedora-rawhide.html

We'll need a container image for testing this, but these are currently not yet made available - see https://github.com/fedora-cloud/docker-brew-fedora/branches

This was originally reported at lovell/sharp#3423

[lovell]

Test for Fedora 38 added via commit 6761837 with following expectation, which the existing logic already matches/provides.

            expected-family: glibc
            expected-version: 2.36.9000