Upgrade to doxygen 1.15.0

Author: afpineda

.github/workflows/APIdoc.yaml

@@ -36,7 +36,7 @@ jobs:
         uses: actions/checkout@v4
 
       - name: Run D'oxygen
-        uses: mattnotmitt/doxygen-action@v1.9.4
+        uses: mattnotmitt/doxygen-action@v1.12.0
         with:
           working-directory: 'doc'
           doxyfile-path: 'Doxyfile'