v5.21.1

What's Changed

• Release v5.21.0 by @mtrmac in #1514
• Use c/storage/pkg/ioutils.AtomicWriteFiles to update auth.json by @mtrmac in #1515
• build(deps): bump github.com/BurntSushi/toml from 1.0.0 to 1.1.0 by @dependabot in #1516
• build(deps): bump github.com/sylabs/sif/v2 from 2.4.2 to 2.5.0 by @dependabot in #1520
• Update to benefit from Go 1.16 by @mtrmac in #1521
• build(deps): bump github.com/sylabs/sif/v2 from 2.5.0 to 2.6.0 by @dependabot in #1524
• man containers-registries.conf: clarify mirror association by @vrothberg in #1525
• Use strings.NewReader instead of bytes.NewBufferString by @mtrmac in #1517
• Use correct list syntax in containers-registries.conf(5) by @mtrmac in #1527
• Don't require a Docker-Content-Digest header when deleting images by @mtrmac in #1497
• build(deps): bump github.com/sylabs/sif/v2 from 2.6.0 to 2.7.0 by @dependabot in #1528
• Improve progress bars, and update mpb by @mtrmac in #1530
• build(deps): bump github.com/klauspost/compress from 1.15.1 to 1.15.2 by @dependabot in #1531
• Cirrus: Update to F36 VMs by @cevich in #1535
• Bump github.com/containers/ocicrypt to 566b808 by @lsm5 in #1534
• Fix unwanted reuse of encrypted layers by @mtrmac in #1533

Full Changelog: v5.21.0...v5.21.1