Bumped Whispercpp 1.7.3 that adds WithNoSpeechThreshold #285

Job	Run time
linux-cuda	0s
linux-openvino	0s
macos-coreml	0s
linux-vulkan	0s
windows-cuda	0s
windows-openvino	0s
windows-vulkan	0s
linux / native-build	2m 12s
linux-no-avx / native-build	1m 13s
android / native-build	2m 3s
macos / arm-native-build	2m 25s
macos / intel-native-build	1m 42s
wasm / native-build	1m 5s
windows / intel-native-build	2m 11s
windows-no-avx / native-build	2m 26s
windows / arm-native-build	1m 40s
dotnet-build / dotnet-macos	3m 20s
dotnet-build / dotnet-windows	2m 45s
dotnet-maui-build-and-test / dotnet-maui-build	2m 48s
dotnet-build / dotnet-linux	1m 16s
dotnet-maui-build-and-test / dotnet-maui-test-ios	0s
dotnet-maui-build-and-test / dotnet-maui-test-android	0s
	27m 6s

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