chore: Update validate-pr workflow

[stephanie-anderson]

Update validate-pr action to getsentry/github-workflows@71588dd.

Changes included:

• Skip all checks when a maintainer reopens a PR (feat(validate-pr): Skip all checks when a maintainer reopens a PR github-workflows#161)
• Skip checks for users with write access (feat(validate-pr): Skip checks for users with write access github-workflows#162)

[github-actions]

Semver Impact of This PR

🟢 Patch (bug fixes)

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Internal Changes 🔧

Deps

• Update .NET SDK to v6.3.0 by github-actions in #2615
• Update Native SDK to v0.13.4 by github-actions in #2612
• Update CLI to v3.3.5 by github-actions in #2614
• Update CLI to v3.3.4 by github-actions in #2604
• Update Java SDK to v8.37.1 by github-actions in #2605
• Update Cocoa SDK to v9.8.0 by github-actions in #2596
• Update Native SDK to v0.13.3 by github-actions in #2597
• Update Java SDK to v8.36.0 by github-actions in #2591

Other

• Update validate-pr workflow by stephanie-anderson in #2618

• Add PR validation workflow by stephanie-anderson in #2608
• Pin GitHub Actions to full-length commit SHAs by joshuarli in #2601

Other

• Fix command injection vulnerability in iOS workflow by fix-it-felix-sentry in #2598

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