Fix: Extend timeout for docs deployment to 30 mins

[alexdewar]

Description

It's currently timing out while trying to build all the old versions of the docs. This isn't normally an issue as much of this work is cached, but without the cache it apparently takes longer than the 10 mins limit we currently have. Extend it to 30 mins.

I've left the timeout for the link-checker workflow at 10 mins for now, even though that also involves building the docs, because it only builds the latest version of the docs, so shouldn't be as time consuming. We can always revise this.

Fixes #1265.

Type of change

• Bug fix (non-breaking change to fix an issue)
• New feature (non-breaking change to add functionality)
• Refactoring (non-breaking, non-functional change to improve maintainability)
• Optimization (non-breaking change to speed up the code)
• Breaking change (whatever its nature)
• Documentation (improve or add documentation)

Key checklist

• All tests pass: $ cargo test
• The documentation builds and looks OK: $ cargo doc
• Update release notes for the latest release if this PR adds a new feature or fixes a bug
  present in the previous release

Further checks

• Code is commented, particularly in hard-to-understand areas
• Tests added that prove fix is effective or that feature works

[Copilot]

Pull request overview

Extends the GitHub Actions job timeout for the docs deployment workflow to prevent CI failures when rebuilding all documentation versions without a warm cache.

Changes:

• Increase deploy-docs build job timeout from 10 minutes to 30 minutes.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.74%. Comparing base (6657fd6) to head (5412d4b).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1266   +/-   ##
=======================================
  Coverage   89.74%   89.74%           
=======================================
  Files          57       57           
  Lines        8195     8195           
  Branches     8195     8195           
=======================================
  Hits         7355     7355           
  Misses        544      544           
  Partials      296      296           

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[Aurashk]

makes sense

[alexdewar]

Successfully deployed in 11m15s 🚀