update Oto to v2.2.0-alpha

update Oto to v2.1.0-rc.1

internal/processtest: bug fix: shadernomain is no longer a valid test

Updates hajimehoshi#2035

Revert "internal/devicescale: bug fix: glfw.Monitor.GetContentScale m…

…ight return 0"

This reverts commit ca6f4fc.

Reason: The bug hajimehoshi#2051 couldn't be reproduced and this fix was not needed

internal/graphicscommand: add panic at convertUniforms

internal/ui: bug fix: make the window resizable after the window is c…

…reated

Making the window resizable BEFORE the window is created doesn't
work correctly, especially when switching to enable resizing later.

Closes hajimehoshi#1987

internal/uidriver/mobile: bug fix: specify a shared AVAudioSession fo…

…r CHHapticEngine

Closes hajimehoshi#1976

Revert "internal/graphicsdriver/metal: Bug fix: Vsync didn't work on …

…macOS"

This reverts commit 1dd13ae.

Reason: This caused FPS drop on macOS 12.0.1

Updates hajimehoshi#1885
Closes hajimehoshi#1939

internal/graphicscommand: bug fix: overflow when len(vertices) > len(…

…indices)

Closes hajimehoshi#1913

ebiten: Add VibrationOptions to specify intensity (hajimehoshi#1891)

Updates hajimehoshi#1452