Update supported GitHub Enterprise Server versions #5174

Job	Run time
Packaging: Config and input (ubuntu-latest, linked)	16m 52s
Packaging: Config and input (macos-latest, linked)	14m 10s
Packaging: Config and input (windows-latest, linked)	20m 17s
Packaging: Config and input (ubuntu-latest, default)	18m 35s
Packaging: Config and input (macos-latest, default)	10m 48s
Packaging: Config and input (windows-latest, default)	20m 42s
Packaging: Config and input (ubuntu-latest, nightly-latest)	10m 25s
Packaging: Config and input (macos-latest, nightly-latest)	18m 36s
Packaging: Config and input (windows-latest, nightly-latest)	19m 57s
	2h 30m 22s

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