Changes

Use fork of titan.ProtocolModules.M3UA containing fix

Use a fork of the repository until the M3UA_NOTIFY decoding bug gets its
fix merged, currently submitted upstream in [1].

[1] https://gitlab.eclipse.org/eclipse/titan/titan.ProtocolModules.M3UA/-/merge_requests/4

Change-Id: I9ac3dcad88cd13c1b45fb70bdcd2a474d084a652