version: Roll the version to 2.2.0 #30

Job	Run time
job (debian:stable, gcc, i386, i386)	50s
job (debian:stable, ppc64el, powerpc64le-linux-gnu-gcc, cross-compile)	58s
job (debian:stable, arm64, aarch64-linux-gnu-gcc, cross-compile)	59s
job (debian:stable, s390x, s390x-linux-gnu-gcc, cross-compile)	55s
job (alpine:latest, gcc)	6m 19s
job (opensuse/tumbleweed, clang)	7m 42s
job (opensuse/leap, gcc)	7m 57s
job (ubuntu:jammy, gcc)	7m 4s
job (fedora:latest, clang)	8m 0s
job (debian:testing, clang)	7m 17s
job (debian:stable, clang)	7m 27s
job (alt:sisyphus, gcc)	7m 41s
	1h 3m 9s

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