Bump mattnotmitt/doxygen-action from 1.9.8 to 1.12.0

Bumps [mattnotmitt/doxygen-action](https://github.com/mattnotmitt/doxygen-action) from 1.9.8 to 1.12.0.
- [Release notes](https://github.com/mattnotmitt/doxygen-action/releases)
- [Commits](mattnotmitt/doxygen-action@v1.9.8...v1.12.0)

---
updated-dependencies:
- dependency-name: mattnotmitt/doxygen-action
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/documentation.yml

@@ -43,7 +43,7 @@ jobs:
       - run: sudo rm -rf build
       - run: mkdir build
       - name: Create Doxygen Files
-        uses: mattnotmitt/doxygen-action@v1.9.8
+        uses: mattnotmitt/doxygen-action@v1.12.0
         with:
           doxyfile-path: 'docs/Doxyfile'
       - run: sudo sed -ri 's/<div id="projectname">(.*)/<div id="projectname"><a href="..\/index.html">\1 <\/a>/g' ./build/Doxygen/html/index.html