Fix build with gcc 12

gcc 12 changed header dependencies. It now requires to explicitly
include the '<memory>' C++ header for using 'std::unique_ptr'.
Otherwise, a build error will occur.

See documentation[1] about porting to gcc 12.

Fixes #2940

[1] https://gcc.gnu.org/gcc-12/porting_to.html

Author: dbermond

tests/unit/suites/mfx_dispatch/linux/mfx_dispatch_test_main.h

@@ -26,6 +26,7 @@
 
 #include <gtest/gtest.h>
 #include <map>
+#include <memory>
 #include <list>
 #include <algorithm>
 

tests/unit/suites/tracer/linux/mfx_tracer_test_main.h

@@ -26,6 +26,7 @@
 
 #include <gtest/gtest.h>
 #include <map>
+#include <memory>
 #include <list>
 #include <algorithm>