R-CMD-check.yaml

Increment version number to 1.4.5 #145

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Run time

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Job	Run time
macos-latest (release)	1m 45s
windows-latest (release)	2m 50s
windows-latest (oldrel-4)	4m 5s
ubuntu-latest (devel)	2m 6s
ubuntu-latest (release)	1m 42s
ubuntu-latest (oldrel-1)	1m 40s
ubuntu-latest (oldrel-2)	1m 48s
ubuntu-latest (oldrel-3)	1m 59s
ubuntu-latest (oldrel-4)	1m 55s
	19m 50s