json11: Suppress warnings about unqualified std::move calls

Vendored dependency cannot be updated.

deps/json11/CMakeLists.txt

@@ -4,5 +4,6 @@ add_library(json11 INTERFACE)
 add_library(OBS::json11 ALIAS json11)
 
 target_include_directories(json11 INTERFACE "${CMAKE_CURRENT_SOURCE_DIR}")
+target_compile_options(json11 INTERFACE $<$<COMPILE_LANG_AND_ID:CXX,AppleClang,Clang>:-Wno-unqualified-std-cast-call>)
 
 target_sources(json11 INTERFACE json11.cpp json11.hpp)