Source tarballs should contain StdlibArtifacts.toml files (#38962) (#38969)

Without this, our full source dist tarballs still try to download these.

Co-authored-by: Elliot Saba <[email protected]>

Author: Sacha0

Makefile

@@ -442,6 +442,7 @@ endif
 	# Download all stdlibs and include the tarball filenames in light-source-dist.tmp
 	@$(MAKE) -C stdlib getall NO_GIT=1
 	-ls stdlib/srccache/*.tar.gz >> light-source-dist.tmp
+	-ls stdlib/*/StdlibArtifacts.toml >> light-source-dist.tmp
 
 	# Exclude git, github and CI config files
 	git ls-files | sed -E -e '/^\..+/d' -e '/\/\..+/d' -e '/appveyor.yml/d' >> light-source-dist.tmp