Pin ansible version in AMAUATs tests

ansible-core 2.17+ removes support for discovering Python interpreters
with paths other than python3 which effectively drops support for RHEL
8.

This pins ansible to install the last RHEL 8 compatible version of
ansible-core.

tests/archivematica-acceptance-tests/requirements.txt

@@ -1,2 +1,2 @@
-ansible
+ansible<10.0
 git+https://github.com/containers/podman-compose.git@2681566580b4eaadfc5e6000ad19e49e56006e2b#egg=podman-compose