wpewebkit,webkitgtk: Bump to version 2.46.0

[psaavedra]

• Create new recipe for version 2.46.0
• Delete recipes for version 2.42.5

Changes:

• Skia is used instead of Cairo for 2D rendering, and GPU rendering is enabled by default.
• Offscreen Canvas is now enabled by default.
• Add support for system tracing using Sysprof.
• Add new API to load settings from a config file.
• Add a new setting to toggle 2D Canvas acceleration (enabled by default).
• Undeprecate console messages API and make it available in the 2.0 API.

Release Notes:

• https://wpewebkit.org/release/wpewebkit-2.46.0.html
• https://wpewebkit.org/release/wpewebkit-2.46.0.html

Also CI updates in the build tests jobs definitions:

• Update test jobs definitions to primary build 2.46.X
• Remove preset for 2.42 and add a new one for 2.42