Bump version to 4.15.1 #813

Job	Run time
build-devcontainer	9m 31s
fable-npm-build (ubuntu-latest, 18)	1m 53s
dotnet-build (Debug, ubuntu-latest)	3m 10s
fable-python-build (ubuntu-latest, 3.10)	2m 41s
dotnet-build (Debug, windows-latest)	6m 1s
fable-npm-build (ubuntu-latest, 20)	1m 54s
fable-python-build (ubuntu-latest, 3.11)	3m 23s
dotnet-build (Debug, macOS-latest)	6m 47s
fable-python-build (ubuntu-latest, 3.12)	2m 59s
fable-npm-build (ubuntu-latest, latest)	3m 14s
dotnet-build (Release, ubuntu-latest)	3m 0s
fable-python-build (windows-latest, 3.10)	6m 30s
fable-npm-build (windows-latest, 18)	5m 44s
dotnet-build (Release, windows-latest)	5m 37s
fable-python-build (windows-latest, 3.11)	6m 12s
fable-npm-build (windows-latest, 20)	5m 57s
dotnet-build (Release, macOS-latest)	6m 30s
fable-python-build (windows-latest, 3.12)	5m 5s
fable-npm-build (windows-latest, latest)	8m 6s
fable-python-build (macOS-latest, 3.10)	3m 57s
fable-npm-build (macOS-latest, 18)	4m 9s
fable-python-build (macOS-latest, 3.11)	5m 38s
fable-npm-build (macOS-latest, 20)	3m 13s
fable-python-build (macOS-latest, 3.12)	5m 7s
fable-npm-build (macOS-latest, latest)	3m 21s
	1h 59m 39s

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