Merge pull request #1062 from flavio/release-1.21.0 #99

Job	Run time
Build container image	20m 23s
ci / Check	2m 51s
ci / Unit tests	5m 19s
ci / Rustfmt	6s
ci / Clippy	2m 58s
ci / Integration tests	11m 21s
ci / coverage	20m 33s
ci / Update documentation	9m 0s
Fetch, sign and verify SBOM and provenance files (amd64)	14s
Fetch, sign and verify SBOM and provenance files (arm64)	14s
Create release	9s
	1h 13m 8s

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