Update GitHub Actions dependencies to latest versions

[Copilot]

This PR updates outdated GitHub Actions dependencies in the adapter creation templates to prevent immediate Dependabot PRs when new adapters are created.

Problem

When creating new adapters, the generated GitHub Actions workflows used outdated action versions, specifically actions/checkout@v2. This caused Dependabot to immediately create PRs suggesting to "Bump actions/checkout from 2 to 4" right after adapter creation.

Changes Made

1. Updated template file: Changed templates/_github/workflows/dependabot-auto-merge.raw.yml to use actions/checkout@v4 instead of v2
2. Updated repository workflows: Upgraded .github/workflows/codeql.yml to use github/codeql-action/*@v3 instead of v2
3. Updated test baselines: All baseline test files now correctly generate workflows with current action versions

Impact

• Newly created adapters will use current GitHub Actions versions
• No more immediate Dependabot PRs for outdated actions after adapter creation
• Repository's own workflows also use latest stable action versions
• All 102 tests continue to pass

The main issue was in the template file that gets copied when creating new adapters. Now all generated workflows will use actions/checkout@v4, eliminating the specific Dependabot alert mentioned in the issue.

Fixes #1132.

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• https://api.github.com/repos/ahmadnassri/action-dependabot-auto-merge/releases/latest
  • Triggering command: curl -s REDACTED (http block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

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