Update supported GitHub Enterprise Server versions #2044

Job	Run time
Resolve environment (ubuntu-latest, stable-v2.13.4)	55s
Resolve environment (macos-12, stable-v2.13.4)	2m 9s
Resolve environment (windows-latest, stable-v2.13.4)	1m 58s
Resolve environment (ubuntu-latest, default)	28s
Resolve environment (macos-latest, default)	2m 37s
Resolve environment (windows-latest, default)	3m 15s
Resolve environment (ubuntu-latest, linked)	29s
Resolve environment (macos-latest, linked)	1m 50s
Resolve environment (windows-latest, linked)	1m 34s
Resolve environment (ubuntu-latest, nightly-latest)	59s
Resolve environment (macos-latest, nightly-latest)	2m 20s
Resolve environment (windows-latest, nightly-latest)	3m 10s
	21m 44s

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