scipy: update to v1.15.2

[T-Dynamos]

Closes #3116

Cons:

1. Can't build on macos
2. Needs android 7 and 7+
3. Only 64 bit arches supported

Extra Notes:

Removes need to use LEGACY_NDK as it uses fortran from https://github.com/termux/ndk-toolchain-clang-with-flang.

[T-Dynamos]

SDL does not builds with ndk r27c because of libsdl-org/SDL#9792.
So we need to wait for #3125.

CC: @misl6

[misl6]

Will continue working on the SDL3 recipes this weekend, however we are going to support both SDL2 and SDL3 for a long time, as only Kivy 3.0.0 will support SDL3, and will not be ready quite soon.

Maybe we can use NDK 27 only for some specific recipes? (or a previous one for SDL2)

[T-Dynamos]

Just saw fixed was also pushed for SDL2, so bumped version to include that fix. :)