Merge pull request #30 from emacs-lsp/feat/drop-27 #36

Job	Run time
test (ubuntu-latest, 28.2, false)	45s
test (ubuntu-latest, 29.4, false)	55s
test (ubuntu-latest, 30.1, false)	57s
test (macos-latest, 28.2, false)	1m 32s
test (macos-latest, 29.4, false)	1m 39s
test (macos-latest, 30.1, false)	1m 39s
test (windows-latest, 28.2, false)	1m 32s
test (windows-latest, 29.4, false)	3m 8s
test (windows-latest, 30.1, false)	1m 39s
test (ubuntu-latest, snapshot, true)	41s
test (macos-latest, snapshot, true)	1m 32s
test (windows-latest, snapshot, true)	3m 26s
	19m 25s

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