v8.21.0

Changes

• Update minimum support for Testbench Core v8.21.0+. (v8.20.0...v8.21.0)

Testbench Changes

Added

• Added Orchestra\Testbench\Attributes\WithImmutableDates attribute to force Illuminate\Support\Date to use Carbon\CarbonImmutable.
• Added the following helper functions:
  • Orchestra\Testbench\default_skeleton_path
  • Orchestra\Testbench\refresh_router_lookups