v0.21.1.2

What's Changed

• Drop unittest for integration and system tests by @jonasjucker in #949
• Deprecate v0.18.x by @jonasjucker in #967
• [cosmo-eccodes-definitions] Add 2.25.0.3 by @dominichofer in #965
• [Icon] drop xml2 for coupling by @jonasjucker in #966
• Drop COSMO-GPU by @jonasjucker in #964
• remove infrastructure for serial tests by @jonasjucker in #968
• Remove split_phases by @dominichofer in #971
• Test clean up by @dominichofer in #972
• [py-gt4py] Adding new gt4py version by @edopao in #970
• Fix merge by @dominichofer in #978
• Use more upstream packages by @jonasjucker in #976
• enable uenv in setup-script by @jonasjucker in #975
• Update README.md by @dominichofer in #979
• [balfrin] Update packages by @dominichofer in #946
• [Oasis] add patch to fix broken makefile in 4.0 by @jonasjucker in #980
• Update COSMO build-instructions by @jonasjucker in #981
• Prepare Daint shutdown by @jonasjucker in #982

Full Changelog: v0.21.1.1...v0.21.1.2