pr-ci templates: update test_fips timeouts
    
    test_fips takes between 45 and ~80 mins to run.
    The templates' timeout was 3600s which is too short for
    successful execution. 7200s should do.
    
    Fixes: https://pagure.io/freeipa/issue/8247
    Signed-off-by: François Cami <fcami@redhat.com>
    Reviewed-By: Armando Neto <abiagion@redhat.com>