Use 2023q1 osmo-ttcn3-hacks branch for 2023q1 SUTs
Fix the TTCN3-centos-pcu-test-2023q1 jenkins job where currently most tests are failing. This is because 2023q1 is using an older PCUIF version that is no longer supported by osmo-ttcn3-hacks.git. As discussed, use a 2023q1 branch of osmo-ttcn3-hacks where the support was not removed yet.
