Bump ssciwr/doxygen-install from 1 to 2 (#6585)

Bumps [ssciwr/doxygen-install](https://github.com/ssciwr/doxygen-install) from 1 to 2.
- [Release notes](https://github.com/ssciwr/doxygen-install/releases)
- [Commits](https://github.com/ssciwr/doxygen-install/compare/v1...v2)

---
updated-dependencies:
- dependency-name: ssciwr/doxygen-install
  dependency-version: '2'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/documentation-build.yml

@@ -31,7 +31,7 @@ jobs:
           dot -V
 
       - name: Install Doxygen
-        uses: ssciwr/doxygen-install@v1
+        uses: ssciwr/doxygen-install@v2
         with:
           version: "1.14.0"