Fix testsuite deprecation check script (keycloak#46807)

Signed-off-by: stianst <stianst@gmail.com>

Set version to 26.5.4

Set version to 26.5.3

Set version to 26.4.9

Signed-off-by: stianst <stianst@gmail.com>

Set version to 26.2.13

Signed-off-by: stianst <stianst@gmail.com>

Set version to 26.5.2

Set version to 26.4.8

Set version to 26.5.1

Set version to 26.5.0

Set version to 26.4.7