Updated: CodeQL workflow to use latest action versions

[homelab-alpha]

PR: Update CodeQL Workflow to Use v3 Actions

Summary

This PR updates the codeql-analysis.yaml workflow to address the deprecation of CodeQL Action v2 by upgrading to v3.

🔧 Changes Made

• Upgraded github/codeql-action/init from v2 to v3.
• Upgraded github/codeql-action/autobuild from v2 to v3.
• Updated actions/checkout from v3 to v4.
• Switched runs-on from ubuntu-20.04 to ubuntu-latest for improved compatibility and longevity.

📌 Motivation

GitHub announced the deprecation of CodeQL Action v2. To ensure continued support and security scanning functionality, this workflow has been updated accordingly.

🔗 GitHub Changelog: Deprecation of CodeQL Action v2

🔍 Checklist

• [x] Verified updated workflow syntax.
• [x] Confirmed CI still passes with updated actions.

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🔨 Latest commit	90df19b0e5e5e9a440ced3f53f378b1a23ece20c

[colinwilson]

Thank you!