chore(deps): update docker/setup-buildx-action action to v4.3.0

[scality-renovate]

This PR contains the following updates:

Package	Type	Update	Change
docker/setup-buildx-action	action	minor	v4.1.0 → v4.3.0

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Release Notes

docker/setup-buildx-action (docker/setup-buildx-action)

v4.3.0

Compare Source

• Bump @​docker/actions-toolkit from 0.92.0 to 0.95.0 in #​595
• Bump brace-expansion from 1.1.13 to 1.1.18 in #​600
• Bump js-yaml from 5.2.0 to 5.3.0 in #​585
• Bump postcss from 8.5.10 to 8.5.25 in #​598
• Bump undici from 6.27.0 to 6.28.0 in #​601

Full Changelog: docker/setup-buildx-action@v4.2.0...v4.3.0

v4.2.0

Compare Source

• Preserve names in esbuild bundle by @​crazy-max in #​572
• Bump @​actions/core from 3.0.0 to 3.0.1 in #​551
• Bump @​docker/actions-toolkit from 0.90.0 to 0.92.0 in #​557 #​580
• Bump @​sigstore/core from 3.1.0 to 3.2.1 in #​573
• Bump @​sigstore/verify from 3.1.0 to 3.1.1 in #​576
• Bump js-yaml from 4.1.1 to 5.2.0 in #​562
• Bump sigstore from 4.1.0 to 4.1.1 in #​577
• Bump tmp from 0.2.5 to 0.2.7 in #​556
• Bump undici from 6.25.0 to 6.27.0 in #​570
• Bump vite from 7.3.2 to 7.3.6 in #​569

Full Changelog: docker/setup-buildx-action@v4.1.0...v4.2.0

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[github-actions]

Dependency Bump Evaluation

Package: docker/setup-buildx-action
Version change: v4.1.0 → v4.3.0 (minor)
File changed: .github/workflows/build.yaml (SHA pin update only)

Changes (v4.2.0 + v4.3.0):

• Internal dependency bumps: @docker/actions-toolkit, @actions/core, @sigstore/core, @sigstore/verify, js-yaml, undici, postcss, brace-expansion, vite, tmp, sigstore
• Build tooling: preserve names in esbuild bundle
• No new features, no API changes, no configuration changes

Breaking changes: None

Security concerns: None — includes positive security updates to undici, postcss, vite, and brace-expansion

Impact on codebase: The action is used once at .github/workflows/build.yaml:39 with default configuration (no custom inputs). The update only changes the pinned SHA and version comment. No codebase impact.

CI status: Checks in progress (build, lint, test)

Recommendation: SAFE TO MERGE (once CI is green)

Notes: This is a low-risk minor bump consisting entirely of internal dependency updates within the GitHub Action. The action's public interface is unchanged.

— Claude Code