update phpunit

JBlond · JBlond · commit d883a00f8ab3 · 2019-03-25T21:29:16.000+01:00
diff --git a/composer.json b/composer.json
@@ -22,7 +22,7 @@
         "ext-mbstring": "*"
     },
     "require-dev": {
-        "phpunit/phpunit": "7.*",
+        "phpunit/phpunit": "8.*",
         "squizlabs/php_codesniffer": "*"
     },
     "autoload": {
