scripts/coverity-scan/COMPONENTS.md: Include libqmp in testlibs

Add libqmp to the testlibs component.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240604145934.1230583-6-peter.maydell@linaro.org

scripts/coverity-scan/COMPONENTS.md

@@ -154,7 +154,7 @@ sysemu
   ~ .*/qemu(/include/.*)
 
 testlibs
-  ~ .*/qemu(/tests/qtest(/libqos/.*|/libqtest.*))
+  ~ .*/qemu(/tests/qtest(/libqos/.*|/libqtest.*|/libqmp.*))
 
 tests
   ~ .*/qemu(/tests/.*)