Prepare release of version 2.2.1 #241

Job	Run time
host_qemu (aarch64, gcc)	31m 19s
host_unix (ubuntu-latest, clang)	3m 1s
host_unix (ubuntu-latest, gcc)	3m 0s
host_qemu (armv7, gcc)	30m 3s
host_unix (macos-latest, gcc)	2m 1s
host_unix (ubuntu-24.04-arm, clang)	3m 32s
host_unix (macos-latest, clang)	2m 3s
host_unix (ubuntu-24.04-arm, gcc)	3m 37s
	1h 18m 36s

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