tests : add gh label to vad-test

This commit adds the `gh` label to the VAD tests in the CMakeLists.txt
file so that it is run in github actions.

Author: danbev

tests/CMakeLists.txt

@@ -94,7 +94,7 @@ add_executable(${VAD_TEST} ${VAD_TEST}.cpp)
 target_include_directories(${VAD_TEST} PRIVATE ../include ../ggml/include ../examples)
 target_link_libraries(${VAD_TEST} PRIVATE common)
 add_test(NAME ${VAD_TEST} COMMAND ${VAD_TEST})
-set_tests_properties(${VAD_TEST} PROPERTIES LABELS "unit")
+set_tests_properties(${VAD_TEST} PROPERTIES LABELS "unit;gh")
 
 # VAD test full uses whisper_full with VAD enabled
 set(VAD_TEST test-vad-full)