Merge pull request #1 from PhpGt/hard-dependencies

build: hard dependencies

Author: Greg Bowler

composer.json

@@ -8,8 +8,8 @@
 	},
 
 	"require-dev": {
-		"phpunit/phpunit": "9.*",
-		"phpstan/phpstan": ">=0.12.64"
+		"phpstan/phpstan": "v1.8.0",
+		"phpunit/phpunit": "v9.5.21"
 	},
 
 	"license": "MIT",