2025.4

@AA-Turner

What's Changed

Require Sphinx 7.3 by @AA-Turner in #221
Add support for Python 3.14 by @hugovk #236
Drop support for Python 3.10 and 3.11 by @hugovk in #234
Add a copy button to code samples by @tomasr8 in #231
Add missing i18n for copy button titles by @tomasr8 in #225
Use consistent line-height for light & dark theme by @tomasr8 in #227
Remove self-closing tags by @hugovk in #226
Replace deprecated classifier with licence expression (PEP 639) by @hugovk in #237
Use the correct spelling of the --languages flag by @AA-Turner in #228
CI: Use --branches for docsbuild-scripts by @hugovk in #232

Full Changelog: 2025.2...2025.4