Update supported GitHub Enterprise Server versions #7247

Job	Run time
Packaging: Config file (ubuntu-latest, linked)	1m 26s
Packaging: Config file (macos-latest, default)	1m 58s
Packaging: Config file (windows-latest, linked)	4m 19s
Packaging: Config file (ubuntu-latest, default)	1m 4s
Packaging: Config file (windows-latest, default)	2m 49s
Packaging: Config file (ubuntu-latest, nightly-latest)	1m 16s
Packaging: Config file (windows-latest, nightly-latest)	5m 0s
Packaging: Config file (macos-latest, nightly-latest)	2m 26s
Packaging: Config file (macos-latest, linked)	2m 20s
	22m 38s

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