chore(deps): update dependency reviewdog/reviewdog to v0.21.0

[renovate]

This PR contains the following updates:

Package	Update	Change
reviewdog/reviewdog	minor	v0.20.3 -> v0.21.0

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Release Notes

reviewdog/reviewdog (reviewdog/reviewdog)

v0.21.0

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✨ Release Note

Starting from this release, reviewdog enables immutable releases to ensure the integrity of released assets. Released assets and the release itself are now immutable and can be verified using:

gh release verify <tag>
gh release verify-asset <tag> <asset>

🚀 Enhancements

• #​2026 Add reporter for GitHub annotations github-annotations. Same as github-pr-annotations but not restricted to pull requests.
• #​2131 Fetch GitHub git based diffs using the base pull request repo to allow fetching from private forks in GitHub Actions.
• #​2210 Update Gitea PR reporter to detect comments for already reported issues and report suggestions.
• #​1931 Refactor handling of Git relative path - Centralized path normalization logic and added automatic --relative flag to git diff commands for consistent relative path handling.

🐛 Fixes

• #​967 Fix parsing long lines in diffs #​967
• #​1344 Bitbucket Cloud Fixes
• #​1983 Improve error message for diff command failure by including stderr output
• #​1975 Fix for suggestions not including an inserted EOF newline
• #​2026 Never filter diffs when running github-[pr-][check|annotate] on non-PRs
• #​2214 #​2231 Migrate install.sh from godownloader to binstaller to prevent future failures when .sbom.json files are added to release artifacts. While reviewdog releases don't currently include SBOM files, this preemptively fixes the grep pattern bug that would cause installation failures when they are added in the near future.

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