Bumped Whispercpp 1.7.3 that adds WithNoSpeechThreshold #262

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	1m 53s
linux / native-build	2m 11s
linux-no-avx / native-build	1m 22s
macos / arm-native-build	2m 36s
macos / intel-native-build	1m 2s
wasm / native-build	58s
windows / intel-native-build	1m 29s
windows / arm-native-build	1m 43s
windows-no-avx / native-build	2m 18s
dotnet-build / dotnet-windows	2m 53s
dotnet-maui-build-and-test / dotnet-maui-build	4m 39s
dotnet-build / dotnet-linux	36s
dotnet-build / dotnet-macos	36s
dotnet-maui-build-and-test / dotnet-maui-test-android	4m 18s
	28m 34s

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