Mark the libs component required

Everything else depends on it, after all.

(cherry picked from commit cf54e3b9)

cmake/OpenCVPackaging.cmake

@@ -73,6 +73,7 @@ set(CPACK_COMPONENT_TESTS_DISPLAY_NAME   "Tests")
 
 #depencencies
 set(CPACK_DEBIAN_PACKAGE_SHLIBDEPS TRUE)
+set(CPACK_COMPONENT_LIBS_REQUIRED TRUE)
 set(CPACK_COMPONENT_SAMPLES_DEPENDS libs dev)
 set(CPACK_COMPONENT_DEV_DEPENDS libs)
 set(CPACK_COMPONENT_DOCS_DEPENDS libs)