chore(deps-dev): bump orchestra/testbench from 6.17.0 to 6.19.0

Sourced from orchestra/testbench's releases.

<h2>v6.19.0</h2> <h3>Changes</h3>

• Update minimum support for Testbench Core v6.23.0+. (v6.22.0...v6.23.0)

<h4>Testbench Changes</h4> <h5>Changes</h5>

• Improves generating cached routes during testing.
• Allows to loads .env when using Orchestra\Testbench\Foundation\Application.
• Update skeleton.

<h2>v6.18.0</h2> <h3>Changes</h3>

• Update minimum support for Testbench Core v6.22.0+. (v6.21.3...v6.22.0)

<h4>Testbench Changes</h4> <h5>Added</h5>

• Added Orchestra\Testbench\Foundation\Application to allow creating remote application using Testbench.
• Added static public method Orchestra\Testbench\Concerns\CreatesApplication::applicationBasePath() to replace getBasePath().

<h5>Changes</h5>

• Update skeleton.

<h2>v6.17.1</h2> <h3>Changes</h3>

• Update minimum support for Testbench Core v6.21.3+. (v6.21.0...v6.21.3)

<h4>Testbench Changes</h4> <h5>Changes</h5>

• Update skeleton to match v8.5.18.
• Check whether skeleton vendor is an actual directory before trying to symlink with base directory vendor.

<h5>Fixes</h5>

• Fixes missing PHPUnit\Util\Test::parseTestMethodAnnotations() on PHPUnit 10.

Sourced from orchestra/testbench's changelog.

<h2>6.19.0</h2>

Released: 2021-07-01

<h3>Changes</h3>

• Update minimum support for Testbench Core v6.23.0+. (v6.22.0...v6.23.0)

<h4>Testbench Changes</h4> <h5>Changes</h5>

• Improves generating cached routes during testing.
• Allows to loads .env when using Orchestra\Testbench\Foundation\Application.
• Update skeleton.

<h2>6.18.0</h2>

Released: 2021-05-25

<h3>Changes</h3>

• Update minimum support for Testbench Core v6.22.0+. (v6.21.3...v6.22.0)

<h4>Testbench Changes</h4> <h5>Added</h5>

• Added Orchestra\Testbench\Foundation\Application to allow creating remote application using Testbench.
• Added static public method Orchestra\Testbench\Concerns\CreatesApplication::applicationBasePath() to replace getBasePath().

<h5>Changes</h5>

• Update skeleton.

<h2>6.17.1</h2>

Released: 2021-05-19

<h3>Changes</h3>

• Update minimum support for Testbench Core v6.21.3+. (v6.21.0...v6.21.3)

<h4>Testbench Changes</h4> <h5>Changes</h5>

• Update skeleton to match v8.5.18.
• Check whether skeleton vendor is an actual directory before trying to symlink with base directory vendor.

... (truncated)

• 4e3ee38 Prepare 6.19.0 release.
• ce41e14 wip
• 5abc9e0 wip
• 022e72b Prepare 6.18.0 release
• 46697d6 wip
• 54ea2ee Merge branch '5.x' into 6.x
• ba0c76d wip
• 2b927fa Merge branch '4.x' into 5.x
• fccde56 Prepare 5.19.0 release
• 84a8ebf wip
• Additional commits viewable in compare view

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