Don't use yum for ubuntu image

Author: oscarbenjamin

bin/cibw_before_all_linux_armv8l.sh

@@ -4,7 +4,7 @@ set -e
 
 cat wheels/LICENSE_linux_wheels.txt >> LICENSE
 
-yum install -y xz
+#yum install -y xz
 bin/build_dependencies_unix.sh\
   --gmp gmp\
   --host aarch64-pc-linux-gnu\

pyproject.toml

@@ -82,7 +82,7 @@ package = "flint"
 [tool.cibuildwheel]
 # requires-python needs to keep in sync with this and also the list of Python
 # versions the wheels are tested against in CI.
-build = "cp311-* cp312-* cp313-* cp313t-* cp314-* cp314t-* pp311-*"
+build = "pp311-*"
 skip = "*-win32 *-manylinux_i686 *-musllinux_*"
 
 manylinux-x86_64-image = "manylinux2014"