Upgrade to Core 14.7.0 #170

Job	Run time
build (ubuntu-latest, Debug, True)	11m 42s
build (ubuntu-latest, Debug, False)	12m 16s
build (ubuntu-latest, Release, True)	10m 8s
build (ubuntu-latest, Release, False)	9m 49s
build (windows-latest, Debug, True)	21m 4s
build (windows-latest, Debug, False)	20m 7s
build (windows-latest, Release, True)	12m 24s
build (windows-latest, Release, False)	12m 48s
build (macos-latest, Debug, True)	10m 45s
build (macos-latest, Debug, False)	4m 27s
build (macos-latest, Release, True)	4m 39s
build (macos-latest, Release, False)	11m 11s
	2h 21m 20s

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