Automatically generate "thank you" message for all contributors in release script

[fwcd]

It would be nice if we could auto-generate this in the release_version.py script (i.e. automatically include all contributors except from the current user in a short "thank you" note):

kotlin-language-server/CHANGELOG.md

Lines 12 to 13 in a18cd78

	Thanks to @ElamC, @themkat, @chenrui333, @calamont, @ks-korovina and @daplf for
	your contributions!