doc: bump 2.1.2 (#151) #600

Job	Run time
Build Docker images (amd64)	7m 50s
build / Build and attach .deb and .whl packages (3.12, amd64)	6m 1s
shared / Static Code Analysis	2m 42s
shared / Bandit	30s
shared / Format	35s
shared / Lint	27s
shared / Sort	29s
shared / Unit test for Python 3.10 on ubuntu-22.04	41s
shared / Unit test for Python 3.11 on ubuntu-22.04	38s
shared / Unit test for Python 3.12 on ubuntu-22.04	43s
shared / Unit test for Python 3.13 on ubuntu-22.04	1m 17s
install (ubuntu-20.04)	2m 6s
install (ubuntu-22.04)	2m 21s
E2E tests (amd64)	5m 46s
	32m 6s

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