Add more files to sdist #336

Job	Run time
lint	3m 26s
notify-tests (macos-latest)	22m 51s
cabal (9.6.5, macos-latest)	18m 0s
nix (macos-latest)	23m 50s
stack (macos-latest, false)	27m 59s
cabal (9.6.5, ubuntu-latest)	19m 35s
nix (ubuntu-latest)	23m 29s
stack (ubuntu-latest, true)	14m 47s
cabal (9.8.2, --project-file cabal.ghc982.project, macos-latest)	17m 4s
cabal (9.8.2, --project-file cabal.ghc982.project, ubuntu-latest)	18m 2s
cabal (9.10.1, macos-latest)	19m 5s
cabal (9.10.1, ubuntu-latest)	19m 39s
release_linux_static	0s
release_osx	0s
release_linux	0s
merge	0s
	3h 47m 47s

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