Update supported GitHub Enterprise Server versions #5184

Job	Run time
Packaging: Config file (ubuntu-latest, linked)	16m 23s
Packaging: Config file (macos-latest, linked)	14m 1s
Packaging: Config file (windows-latest, linked)	16m 53s
Packaging: Config file (ubuntu-latest, default)	20m 13s
Packaging: Config file (macos-latest, default)	11m 8s
Packaging: Config file (windows-latest, default)	12m 1s
Packaging: Config file (ubuntu-latest, nightly-latest)	20m 7s
Packaging: Config file (macos-latest, nightly-latest)	13m 54s
Packaging: Config file (windows-latest, nightly-latest)	20m 10s
	2h 24m 50s

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