Bumped Whispercpp 1.7.3 that adds WithNoSpeechThreshold #264

Job	Run time
linux-cuda	0s
linux-openvino	0s
linux-vulkan	0s
macos-coreml	0s
windows-cuda	0s
windows-openvino	0s
windows-vulkan	0s
linux / native-build	2m 15s
android / native-build	1m 42s
linux-no-avx / native-build	1m 18s
macos / arm-native-build	2m 36s
macos / intel-native-build	59s
wasm / native-build	1m 4s
windows / arm-native-build	1m 42s
windows / intel-native-build	1m 49s
windows-no-avx / native-build	2m 17s
dotnet-build / dotnet-macos	37s
dotnet-build / dotnet-windows	1m 16s
dotnet-maui-build-and-test / dotnet-maui-build	4m 22s
dotnet-build / dotnet-linux	40s
dotnet-maui-build-and-test / dotnet-maui-test-android	4m 36s
	27m 13s

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