The FoundationDB operator no longer carries the 7.1 client, so it can
neither manage nor upgrade a 7.1 cluster. The version map offered v7.1
all the same; it now lists the lines the operator carries, 7.3 and 7.4,
which is also what hack/update-versions.sh reads from the operator
chart.
Assisted-by: LLM
Signed-off-by: Andrei Kvapil <kvapss@gmail.com>