Update supported GitHub Enterprise Server versions #2543

Job	Run time
Resolve environment (ubuntu-latest, stable-v2.13.5)	46s
Resolve environment (macos-12, stable-v2.13.5)	2m 41s
Resolve environment (windows-latest, stable-v2.13.5)	1m 46s
Resolve environment (ubuntu-latest, default)	24s
Resolve environment (macos-latest, default)	2m 3s
Resolve environment (windows-latest, default)	1m 21s
Resolve environment (ubuntu-latest, linked)	26s
Resolve environment (macos-latest, linked)	1m 55s
Resolve environment (windows-latest, linked)	1m 21s
Resolve environment (ubuntu-latest, nightly-latest)	53s
Resolve environment (macos-latest, nightly-latest)	2m 2s
Resolve environment (windows-latest, nightly-latest)	6m 48s
	22m 26s

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