Manim v0.20.0 发布

<!-- Release notes generated using configuration in .github/release.yml at main -->

See [our rendered changelog](https://docs.manim.community/en/stable/changelog/0.20.0-changelog.html).

## What's Changed

### Breaking Changes 🚨

* Fix `ImageMobject` 3D rotation/flipping and remove resampling algorithms `lanczos` (`antialias`), `box` and `hamming` by @chopan050 in https://github.com/ManimCommunity/manim/pull/4266

* Fix `YELLOW_C` and add `PURE_CYAN`, `PURE_MAGENTA` and `PURE_YELLOW` by @chopan050 in https://github.com/ManimCommunity/manim/pull/4562

### Highlights 🌟

* Rewrite MathTex to make it more robust regarding splitting by @henrikmidtiby in https://github.com/ManimCommunity/manim/pull/4515

* Add new Animation Builder `Mobject.always` by @JasonGrace2282 in https://github.com/ManimCommunity/manim/pull/4594

### New Features ✨

* Add a `seed` config option + `--seed` CLI option for reproducible randomness in rendered scenes by @arnaud-ma in https://github.com/ManimCommunity/manim/pull/4532

### Enhancements 🚀

* Enable strict=True for zip() where safe by @Oll-iver in https://github.com/ManimCommunity/manim/pull/4547

### Bug Fixes 🐛

* using `color` instead of `fill_color` with MathTeX for node labels by @Schefflera-Arboricola in https://github.com/ManimCommunity/manim/pull/4501

* fix: infinite recursion caused by accessing color of a highlighted Ta… by @BHearron in https://github.com/ManimCommunity/manim/pull/4435

* Prevent potential `UnboundLocalError` in `PolarPlane` by @RinZ27 in https://github.com/ManimCommunity/manim/pull/4557

* Fixed division by 0 in "turn_animation_into_updater" by @SoldierSacha in https://github.com/ManimCommunity/manim/pull/4567

* Fix TOCTOU Race Conditions when creating directories by @SoldierSacha in https://github.com/ManimCommunity/manim/pull/4587

* Resolve more race conditions potentially happening during directory creation by @SoldierSacha in https://github.com/ManimCommunity/manim/pull/4589

* Fix c2p/coords_to_point with single flat list or 1D array input by @danielalanbates in https://github.com/ManimCommunity/manim/pull/4596

### Documentation 📚

* Enable rendered documentation of `RandomColorGenerator` by @arnaud-ma in https://github.com/ManimCommunity/manim/pull/4533

* Remove pin to Python 3.13 in installation docs by @chopan050 in https://github.com/ManimCommunity/manim/pull/4534

* Fix broken aquabeam OpenGL link using Wayback Machine by @behackl in https://github.com/ManimCommunity/manim/pull/4545