GH41457 Upgrade Bootstrap to v5.0
Whats new:

Update BS script tags in template

Replace jumbotron with utilities

Replace font-weight-bold with fw-bold

Replace ml-auto with ms-auto

Replace float-right with float-end

Replace data-target with data-bs-target

Replace data-toggle with data-bs-toggle

Add CSS rules for <a>

- [x] closes #41457 
- [x] Ensure all linting tests pass, see [here](https://pandas.pydata.org/pandas-docs/dev/development/contributing.html#code-standards) for how to run them
- [x] whatsnew entry
