Unblock nightly builds
We didn't have a working nightly build in a while, because:
- on linux, namecoin patch fails to apply (#40845)
- on all platforms, because of dependency changes in obfs4 on the main branch (#40850 (closed))
In an other ticket about a possible updater bug, @pierov suggested we get working nightly builds by temporarily disabling namecoin patches, and setting obfs4 to an older commit.
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