chore: Update composer dependencies

chore: Update PHP dependencies

Merge pull request #85 from getkirby/develop

1.6.0

Merge pull request #80 from getkirby/bastianallgeier-patch-2

Update composer.json

Merge pull request #76 from getkirby/develop

Kirby CLI 1.4.0

Merge pull request #58 from getkirby/release/1.3.0

1.3.0

Merge pull request #53 from getkirby/develop

1.2.0

Merge pull request #41 from getkirby/develop

v1.1.1

Merge pull request #25 from getkirby/bastianallgeier-patch-1

Improve docs

Merge pull request #14 from getkirby/develop

1.0.1