Update godot to 3.4.2
Changes:
- C#: Check that a .csproj exists before trying to edit it
- GUI: Fix BaseButton's localization for tooltip text with shortcut
- Input: Revert #55997 "Fixed event spam when using the Nintendo Switch controller" (drastically reduced the sensitivity for analog joysticks)
- Rendering: GLES2: Fix trunc shader function compilation on Android
- XR: Fix size issue for ARVR managed viewport