CI: disable FreeBSD / Cirrus builds

They started to fail a few weeks ago with the following error ``` ./autogen.sh Running aclocal autom4te-2.69: need GNU m4 1.4 or later: /usr/local/bin/gm4 aclocal: error: autom4te failed with exit status: 1 Something went wrong, giving up! ```
OSGeo · Mar 3, 2021 · de9c1ec · de9c1ec
1 parent 9e2eb06
commit de9c1ec
Showing 1 changed file with 0 additions and 0 deletions.
diff --git a/.cirrus.yml → .cirrus.yml.disabled b/.cirrus.yml → .cirrus.yml.disabled