CI failure on each commit job

In ##66 

```
CMake Error at src/sv2/CMakeLists.txt:5 (add_library):

  No SOURCES given to target: bitcoin_sv2


Running test-one-commit on commit 23d2c35a430cbb661a743a17111b606ca93d6a99 Author: Sjors Provoost ... Date: Fri Sep 13 11:05:43 2024 +0200 build: libbitcoin_sv2 scaffold
```

https://github.com/Sjors/bitcoin/actions/runs/13459317267/job/37610523391?pr=66