Bumped Whispercpp 1.7.3 that adds WithNoSpeechThreshold #274

Job	Run time
linux-openvino	0s
linux-cuda	0s
linux-vulkan	0s
macos-coreml	0s
windows-cuda	0s
windows-openvino	0s
windows-vulkan	0s
linux / native-build	2m 23s
android / native-build	2m 4s
linux-no-avx / native-build	1m 19s
macos / arm-native-build	2m 43s
macos / intel-native-build	59s
wasm / native-build	1m 2s
windows / arm-native-build	59s
windows-no-avx / native-build	1m 28s
windows / intel-native-build	2m 33s
dotnet-build / dotnet-linux	1m 18s
dotnet-maui-build-and-test / dotnet-maui-build	3m 53s
dotnet-build / dotnet-windows	2m 58s
dotnet-build / dotnet-macos	3m 11s
dotnet-maui-build-and-test / dotnet-maui-test-android	0s
	26m 50s

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