Change gdscript-eglot-version type to be string instead of integer #71

Job	Run time
test (ubuntu-latest, 26.3, false)	37s
test (ubuntu-latest, 27.2, false)	42s
test (ubuntu-latest, 28.2, false)	40s
test (ubuntu-latest, 29.4, false)	51s
test (macos-latest, 28.2, false)	1m 20s
test (macos-latest, 29.4, false)	1m 31s
test (windows-latest, 26.3, false)	2m 9s
test (windows-latest, 27.2, false)	1m 11s
test (windows-latest, 28.2, false)	1m 17s
test (windows-latest, 29.4, false)	1m 40s
test (ubuntu-latest, snapshot, true)	37s
test (macos-latest, snapshot, true)	1m 18s
test (windows-latest, snapshot, true)	1m 19s
	15m 12s

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