Bumped Whispercpp 1.7.3 that adds WithNoSpeechThreshold #292

Job	Run time
linux-cuda	0s
linux-openvino	0s
linux-vulkan	0s
macos-coreml	0s
windows-cuda	0s
windows-openvino	0s
windows-vulkan	0s
android / native-build	2m 3s
macos / arm-native-build	2m 27s
linux / native-build	2m 25s
linux-no-avx / native-build	1m 21s
wasm / native-build	1m 3s
windows / arm-native-build	2m 2s
windows / intel-native-build	1m 45s
windows-no-avx / native-build	2m 22s
macos / intel-native-build	55s
dotnet-build / dotnet-macos	3m 2s
dotnet-build / dotnet-linux	1m 16s
dotnet-build / dotnet-windows	3m 20s
dotnet-maui-build-and-test / dotnet-maui-build	19m 8s
dotnet-maui-build-and-test / dotnet-maui-test-ios	0s
dotnet-maui-build-and-test / dotnet-maui-test-android	0s
	43m 9s

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