Update raw-window-handle to 0.5.0

[Nuckal777]

Resolves #1269

I tested this on:

• Linux with X11: raw-window-handle test pass and the example shows the triangle.
• Windows with Win32: raw-window-handle test pass and the example shows the triangle.
• MacOS: The example works and shows the triangle. We need SDL to construct a SDL_MetalView though, which likely means one can only use Metal afterwards. The test fails to run with the same error as in AppKit Error when using VideoSubsystem on MacOS after installing #1151. The mentioned issue is caused by cargo test using multiple threads.

Other platforms are best effort guess work.

[Cobrand]

The mentioned issue is caused by cargo test using multiple threads.

You can confirm this is the issue by setting the env variable RUST_TEST_THREADS to 1 (which is already set on CI).

Could you please check to confirm this does fix it? Other than that, it looks good. Thanks!

[Nuckal777]

RUST_TEST_THREADS=1 makes everything run smoothly. 👍

[Cobrand]

Thanks!