bump doxygen version #484

Job	Run time
tests / ClangFormat 12	17s
tests / Cppcheck	16s
tests / client-notests-qt5-suse	2m 23s
tests / client-notests-qt6-suse	2m 44s
tests / server-compiles-with-submodules	4m 0s
tests / games-notests	1m 27s
tests / server-docker-compose-check (1)	7m 3s
tests / server-healthcheck	3m 8s
tests / server-docker-compose-check (4)	7m 8s
tests / server-tests	1m 2s
deploy-server-develop	0s
bundle-client / Windows 64-bit cl	6m 38s
bundle-client / macOS 64-bit clang	9m 17s
bundle-client / CentOS 7 64-bit gcc	1m 2s
bundle-client / Create Release	0s
	46m 25s

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