Update anchore/sbom-action action to v0.21.1

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
anchore/sbom-action	action	minor	v0.20.10 → v0.21.1

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Release Notes

anchore/sbom-action (anchore/sbom-action)

v0.21.1

Compare Source

Changes in v0.21.1

• chore(deps): update Syft to v1.40.0 (#​562) [[anchore-actions-token-generator[bot]](https://github.com/anchore-actions-token-generator[bot])]

v0.21.0

Compare Source

• chore(deps): update Syft to v1.39.0 (#​561)
• chore(deps): bump @​octokit/request-error, @​octokit/core and @​octokit/webhooks (#​560)
• chore(deps): bump peter-evans/create-pull-request from 7.0.11 to 8.0.0 (#​558)

v0.20.11

Compare Source

Changes in v0.20.11

• update Syft to v1.38.2 (#​557)
• bump @​octokit/plugin-paginate-rest, @​actions/artifact and @​actions/github (#​550) [[dependabot[bot]](https://github.com/dependabot[bot])]
• bump js-yaml (#​552) [[dependabot[bot]](https://github.com/dependabot[bot])]

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