Makefile: fix update-versions.

We need to run `uv lock` once the Python versions are updated.

Signed-off-by: Rusty Russell <[email protected]>

Author: rustyrussell

Makefile

@@ -757,6 +757,7 @@ clean: obsclean
 # See doc/contribute-to-core-lightning/contributor-workflow.md
 PYLNS=client proto testing
 update-versions: update-pyln-versions update-reckless-version update-dot-version update-doc-examples
+	@uv lock
 update-pyln-versions: $(PYLNS:%=update-pyln-version-%)
 
 update-pyln-version-%: