Get rid of Catch2's internal warnings

CMakeLists.txt

@@ -355,6 +355,8 @@ include_directories(${PUGS_BINARY_DIR}/src)
 # Pugs tests
 set(CATCH_MODULE_PATH "${PUGS_SOURCE_DIR}/packages/Catch2")
 add_subdirectory("${CATCH_MODULE_PATH}")
+target_compile_options(Catch2 PRIVATE "-w")
+target_compile_options(Catch2WithMain PRIVATE "-w")
 
 add_subdirectory(tests)