Maintainer merge checklist

• Title is descriptive/clear for inclusion in release notes.
• Applied a Component: xxx label.
• Applied the api-deprecation or api-break label.
• Applied the release-highlight label to be highlighted in release notes.
• Added to the milestone version it was merged into.
• Unittests are included in PR.
• Properly documented, including versionadded, versionchanged as needed.

• ✅ CI looks happy
• ✅ Locally tested on macOS 12 Apple Silicon during runtime
• ⚠️ May need some runtime testing on Linux
• ⚠️ Windows dependencies packages will be updated to follow the same exact version
• ⚠️ iOS recipes will be updated to follow the same exact version
• ⚠️ Android recipes will be updated to follow the same exact version (It may need some patching due to Issues introduced by PR #2113 (SDL2) python-for-android#2169)

These recent releases of SDL2* libraries include a series of fixes and features that we can use to improve our support for specific features or platforms.

As an example:

• Improved retina screen support (notices about DPI changes when moving a window from displays with two different densities)
• Harfbuzz is now built by default, and we don't even need to build it separately. (SDL_ttf)
• Added TTF_SetFontDirection, see: https://github.com/libsdl-org/SDL_ttf/blob/fc8ff6cbdc332ba5ad150d0fedfc7be94c448339/SDL_ttf.h#L2287
• Added TTF_SetFontScriptName see: https://github.com/libsdl-org/SDL_ttf/blob/fc8ff6cbdc332ba5ad150d0fedfc7be94c448339/SDL_ttf.h#L2306
• Improved support on Android for keyboard events
• A lot of other bug fixes and features.

This PR comes with a 3-4 months gap before the next potential release, giving us some time for testing and additional features.

Edit: I took the occasion to slightly improve the scripts. I think I covered all the possible download combinations, as we might need to target a specific hash in future. (and different versions for different platforms).