Simplify and update `verify-templating.yml` #650

Job	Run time
Generate Jobs	39s
8.0.4-noble	2m 9s
8.0.4-windowsservercore-ltsc2022, 8.0.4-nanoserver-ltsc2022	3m 58s
8.0.4-windowsservercore-1809, 8.0.4-nanoserver-1809	5m 4s
7.0.16-rc1-jammy	2m 16s
7.0.16-rc1-windowsservercore-ltsc2022, 7.0.16-rc1-nanoserver-ltsc2022	4m 43s
7.0.16-rc1-windowsservercore-1809, 7.0.16-rc1-nanoserver-1809	3m 59s
7.0.15-jammy	2m 16s
7.0.15-windowsservercore-ltsc2022, 7.0.15-nanoserver-ltsc2022	3m 59s
7.0.15-windowsservercore-1809, 7.0.15-nanoserver-1809	3m 15s
6.0.20-rc3-jammy	2m 35s
6.0.20-rc3-windowsservercore-ltsc2022, 6.0.20-rc3-nanoserver-ltsc2022	4m 31s
6.0.20-rc3-windowsservercore-1809, 6.0.20-rc3-nanoserver-1809	3m 7s
6.0.19-jammy	2m 29s
6.0.19-windowsservercore-ltsc2022, 6.0.19-nanoserver-ltsc2022	4m 25s
6.0.19-windowsservercore-1809, 6.0.19-nanoserver-1809	4m 26s
5.0.30-focal	2m 31s
5.0.30-windowsservercore-ltsc2022, 5.0.30-nanoserver-ltsc2022	2m 50s
5.0.30-windowsservercore-1809, 5.0.30-nanoserver-1809	4m 39s
	1h 3m 51s

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