build(deps): update khronos-egl requirement from 5.0 to 6.0

[dependabot]

Updates the requirements on khronos-egl to permit the latest version.

Changelog

Sourced from khronos-egl's changelog.

[6.0.0]

Changed

• copy_buffers is now unsafe.
• get_display is now unsafe.
• get_platform_display is now unsafe.
• create_platform_window_surface is now unsafe.
• create_platform_pixmap_surface is now unsafe.

Fixed

• Fix choose_config & get_config undefined behavior when the input configs vector is empty. (Fixes #21).
• Fix Windows build (Fixes #23).

[5.0.0]

Changed

• Upgrade dependency libloading: ^0.7 -> ^0.8.

[4.1.0]

Changed

• load_required and load now trying to load libEGL.so.1 or libEGL.so.

[4.0.0]

Added

• no-pkg-config feature.

Changed

• Upgrade dependency libloading: ^0.6 -> ^0.7.

Removed

• nightly feature hich is no longer needed since const_fn is stabilized.

[3.0.2]

Changed

• One Linux, use the RTLD_NODELETE when loading the EGL library in load_required_from_filename and load_from_filename.

[3.0.1]

Changed

• Load libEGL.so.1 by default instead of libEGL.so.

[3.0.0]

Changed

• Impl Debug for Static, Dynamic and Instance.
• Add a DynamicInstance type alias for Instance<Dynamic<libloading::Library>> with helper functions.
• Precise version selection.
• Dynamic cast between versions with Dynamic::load, Dynamic::load_required and the Upcast/Downcast traits.
• DynamicInstance::downcast and IDynamicInstance::upcast.

[3.0.0-beta]

Changed

• Removed the khronos dependency.
• Dynamic linking: Add the Api trait and the Instance struct along with the static and dynamic features.
• The dependency to pkg-config is now optional, only required by the static feature.
• Add an optional dependency to libloading, only required by the dynamic feature.

... (truncated)

Commits

• 595e890 Fix CI, edition & examples.
• cbc6c23 Fix Windows build
• 0d5fa59 Fix some safety issues.
• 114981d Fix formatting.
• 93a5db9 Fix calling convention on 32 bit windows
• See full diff in compare view

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