Update external cmake

Author: JakaMohorko

external/openDAQ/CMakeLists.txt

@@ -3,8 +3,10 @@ set(OPENDAQ_ENABLE_TESTS false)
 FetchContent_Declare(
     openDAQ
     GIT_REPOSITORY https://github.com/openDAQ/openDAQ.git
-    GIT_TAG v3.19.0-rc
+    GIT_TAG v3.20.1
     GIT_PROGRESS   ON
+	SYSTEM
+    FIND_PACKAGE_ARGS 3.20.1 GLOBAL
 )
 
 FetchContent_MakeAvailable(openDAQ)