build(deps): bump github.com/opencontainers/image-spec from 1.1.0-rc5 to 1.1.0-rc.6

[dependabot[bot]]

Bumps github.com/opencontainers/image-spec from 1.1.0-rc5 to 1.1.0-rc.6.

Release notes

Sourced from github.com/opencontainers/image-spec's releases.

v1.1.0-rc.6

Vote passed [+6 -0] - https://groups.google.com/a/opencontainers.org/g/dev/c/HOxZlfhr9-o

For changeset and diff please see - opencontainers/image-spec#1157

(Note: this is a duplicate of the v1.1.0-rc6 release for historical and semver reasons.)

v1.1.0-rc6

Vote passed [+6 -0] - https://groups.google.com/a/opencontainers.org/g/dev/c/HOxZlfhr9-o

For changeset and diff please see - opencontainers/image-spec#1157

Commits

• 6c2b5fa version: release v1.1.0-rc6
• 56fb783 Merge pull request #1107 from sudo-bmitch/pr-release-notice
• a6d741a Merge pull request #1148 from dejanu/update_oci_implementations
• 53d9855 new section for projects no longer maintained
• ceeb2eb Merge pull request #1114 from sudo-bmitch/pr-go-1.21
• 90f826d Merge pull request #1133 from sudo-bmitch/pr-gotoolchain
• 162a9c8 Merge pull request #1146 from ardabbour/patch-1
• b391bc0 fix: SPDX licenses URL
• dd66b54 Test older versions of Go with toolchain=local
• 93f6e65 Makefile: remove stray trailing space (#1126)
• Additional commits viewable in compare view

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