Add Codespaces incompatibility note for CLI secrets command

[Copilot]

The gh aw secrets set command fails in GitHub Codespaces environments.

Changes

• Added warning callout in docs/src/content/docs/reference/auth.mdx after CLI examples
• Directs Codespaces users to use GitHub UI method instead

> [!WARNING]
> The `gh aw secrets set` command does not work in GitHub Codespaces. If you're working in Codespaces, use the GitHub UI method below to add secrets.

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:

• telemetry.astro.build
  • Triggering command: /opt/hostedtoolcache/node/24.13.0/x64/bin/node node /home/REDACTED/work/gh-aw/gh-aw/docs/node_modules/.bin/astro build (dns 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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[Copilot]

Pull request overview

This PR adds a documentation warning about GitHub Codespaces incompatibility with the gh aw secrets set command and corrects domain references in the release workflow.

Changes:

• Added WARNING callout in auth.mdx to inform Codespaces users that the CLI secrets command doesn't work in their environment
• Corrected domain references from github.github.io to github.github.com in release workflow allowed domains

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated no comments.

File	Description
docs/src/content/docs/reference/auth.mdx	Added WARNING callout after CLI examples directing Codespaces users to use GitHub UI method instead
.github/workflows/release.lock.yml	Corrected allowed domains from github.github.io to github.github.com and updated frontmatter-hash

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