ci: update GitHub Actions to Node 24 runtime

[hw-df]

Description

Type of Change

• 🐛 Bug fix (non-breaking change that fixes an issue)
• ✨ New feature (non-breaking change that adds functionality)
• 💥 Breaking change (fix or feature that would cause existing functionality to not work as expected)
• 📝 Documentation update
• 🎨 Code style update (formatting, renaming)
• ♻️ Code refactoring (no functional changes)
• ⚡ Performance improvement
• ✅ Test update
• 🔧 Build configuration change
• 🔨 Other (please describe)

Related Issues

Fixes #
Closes #
Related to #

Changes Made

Testing

• Tested locally
• Added/updated unit tests
• Added/updated browser tests
• All tests pass (npm test)
• Linter passes (npm run lint)

Test Environment

• ol-contextmenu version:
• OpenLayers version:
• Node version:
• Browser(s):

Screenshots

Breaking Changes

• No breaking changes
• Breaking changes (described below)

Checklist

• My code follows the project's code style
• I have performed a self-review of my code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• Any dependent changes have been merged and published

Additional Notes