ci: use OpenBSD 7.2 over 7.1 In the most recent CI run, all the OpenBSD CI jobs failed, i.e https://github.com/libevent/libevent/actions/runs/4876367885/jobs/8699759831, this seems to be due to the fact that packages for 7.1 have been removed from https://cdn.openbsd.org/pub/OpenBSD/ (only has 7.2 & 7.3): ```bash Config file: openbsd-7.1.conf https://cdn.openbsd.org/pub/OpenBSD/7.1/packages/amd64/: no such dir Can't find rsync-3.2.3p0 Couldn't install rsync-3.2.3p0 exec shell: bash run.sh showDebugInfo ``` Switch to using 7.2, which is available, so that the CI will run.