Bump version to 4.15.1 #805

Job	Run time
dotnet-build (Debug, ubuntu-latest)	3m 7s
fable-npm-build (ubuntu-latest, 18)	2m 0s
dotnet-build (Debug, windows-latest)	5m 31s
fable-npm-build (ubuntu-latest, 20)	2m 2s
dotnet-build (Debug, macOS-latest)	6m 29s
fable-npm-build (ubuntu-latest, latest)	2m 6s
dotnet-build (Release, ubuntu-latest)	3m 3s
fable-npm-build (windows-latest, 18)	4m 53s
dotnet-build (Release, windows-latest)	5m 56s
build-devcontainer	9m 20s
fable-npm-build (windows-latest, 20)	5m 36s
dotnet-build (Release, macOS-latest)	5m 53s
fable-npm-build (windows-latest, latest)	6m 22s
fable-npm-build (macOS-latest, 18)	2m 52s
fable-python-build (ubuntu-latest, 3.10)	2m 47s
fable-npm-build (macOS-latest, 20)	4m 25s
fable-python-build (ubuntu-latest, 3.11)	2m 44s
fable-npm-build (macOS-latest, latest)	4m 30s
fable-python-build (ubuntu-latest, 3.12)	2m 54s
fable-python-build (windows-latest, 3.10)	5m 7s
fable-python-build (windows-latest, 3.11)	5m 20s
fable-python-build (windows-latest, 3.12)	4m 31s
fable-python-build (macOS-latest, 3.10)	5m 35s
fable-python-build (macOS-latest, 3.11)	4m 29s
fable-python-build (macOS-latest, 3.12)	5m 29s
	1h 53m 1s

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