Merge pull request #633 from PHPCSStandards/feature/ghactions-use-phpstan-1.0

GH Actions: use explicit PHPStan major

Author: jrfnl

.github/workflows/basics.yml

@@ -91,6 +91,8 @@ jobs:
   phpstan:
     name: "PHPStan"
     uses: PHPCSStandards/.github/.github/workflows/reusable-phpstan.yml@main
+    with:
+      phpstanVersion: '1.x'
 
   markdownlint:
     name: 'Lint Markdown'