CI: add gmx-2024, drop gmx-2023 #577

Job	Run time
CI (fedora, gmxpkg)	25m 42s
CI (fedora, rawhide, TAG=rawhide,PYTHON=python3.12, true)	2m 39s
CI (ubuntu, latest)	2m 27s
CI (ubuntu, intel, TAG=22.04,INTEL=yes, true)	5m 10s
CI (ubuntu, rolling, TAG=rolling)	2m 41s
CI (ubuntu, devel, TAG=devel, true)	2m 38s
CI (opensuse, latest, true)	33s
CI (fedora, latest, GMX_BRANCH=release-2019,GMX_DOUBLE=ON)	28m 17s
CI (fedora, gmx2019, GMX_BRANCH=release-2019)	27m 19s
CI (fedora, gmx2024_d, GMX_BRANCH=release-2024,GMX_DOUBLE=ON)	34m 10s
CI (fedora, gmx2024, GMX_BRANCH=release-2024)	31m 57s
CI (fedora, gmx9999_d, GMX_BRANCH=main,GMX_DOUBLE=ON, true)	32m 39s
CI (fedora, gmx9999, GMX_BRANCH=main, true)	32m 2s
CI (fedora, nogmx, GMX_BRANCH=none)	23m 7s
CI (fedora, intel, TAG=38,INTEL=yes,PYTHON=python3.11, true)	29m 50s
CI (actions, latest)	50s
CI (format, latest)	53s
	4h 42m 54s

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