Update bootstrap version to latest 1.13.1

[Incogdino]

What is the purpose of this pull request?

• Documentation update
• Bug fix
• Feature addition or enhancement
• Code maintenance
• DevOps
• Improve developer experience
• Others, please explain:

Fixes #2797

Overview of changes:
Update bootstrap icons to include the latest suite of icons

Anything you'd like to highlight/discuss:
Following up with issue #2820, icons that have numbers in their names should be resolved as well

Testing instructions:

Proposed commit message: (wrap lines at 72 characters)
Update bootstrap version to v1.13.1

---

Checklist: ☑️

• Updated the documentation for feature additions and enhancements
• Added tests for bug fixes or features
• Linked all related issues
• No unrelated changes

---

Reviewer checklist:

Indicate the SEMVER impact of the PR:

• Major (when you make incompatible API changes)
• Minor (when you add functionality in a backward compatible manner)
• Patch (when you make backward compatible bug fixes)

At the end of the review, please label the PR with the appropriate label: r.Major, r.Minor, r.Patch.

Breaking change release note preparation (if applicable):

• To be included in the release note for any feature that is made obsolete/breaking

Give a brief explanation note about:

• what was the old feature that was made obsolete
• any replacement feature (if any), and
• how the author should modify his website to migrate from the old feature to the replacement feature (if possible).

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 71.85%. Comparing base (e708005) to head (668fb21).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #2821   +/-   ##
=======================================
  Coverage   71.85%   71.85%           
=======================================
  Files         134      134           
  Lines        7340     7340           
  Branches     1524     1623   +99     
=======================================
  Hits         5274     5274           
  Misses       1938     1938           
  Partials      128      128           

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[Copilot]

Pull request overview

This PR updates the Bootstrap Icons library from version 1.11.3 to 1.13.1, adding support for 28 new icons in the latest release. The update addresses issue #2797 which requested support for the latest Bootstrap Icons, and follows up on PR #2820 which fixed support for icons with numbers in their names.

Changes:

• Updated bootstrap-icons dependency from ^1.11.3 to ^1.13.1 in package.json
• Updated package-lock.json with new version and integrity hash
• Updated test expectation files across all 9 test site directories with the new icon definitions

Reviewed changes

Copilot reviewed 31 out of 62 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
packages/core/package.json	Updated bootstrap-icons dependency version to ^1.13.1
package-lock.json	Updated lock file with new version 1.13.1 and integrity hash
packages/cli/test/functional/*/expected/markbind/bootstrap-icons/font/bootstrap-icons.css	Updated version header and added 28 new icon CSS rules
packages/cli/test/functional/*/expected/markbind/bootstrap-icons/font/bootstrap-icons.scss	Updated version header and added 28 new icon SCSS definitions
packages/cli/test/functional/*/expected/markbind/bootstrap-icons/font/bootstrap-icons.json	Updated JSON with 28 new icon Unicode mappings
packages/cli/test/functional/test_site/expected/markbind/bootstrap-icons/font/bootstrap-icons.min.css	Updated minified CSS with version and new icons

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[gerteck]

LGTM

[github-actions]

@gerteck Each PR must have a SEMVER impact label, please remember to label the PR properly.