Bugfix/fix sonarcube findings (#6369)

* Fix sonarcube findings.
---------
Co-authored-by: Kim Kulling <kim.kulling@draeger.com>

code/PostProcessing/DeboneProcess.h

@@ -66,7 +66,7 @@ namespace Assimp {
 * the bone are split from the mesh. The split off (new) mesh is boneless. At any
 * point in time, bones without affect upon a given mesh are to be removed.
 */
-class DeboneProcess : public BaseProcess {
+class DeboneProcess final : public BaseProcess {
 public:
     DeboneProcess();
     ~DeboneProcess() override = default;