Merge pull request #48 from ergebnis/dependabot/composer/vimeo/psalm-3.8.3

Author: dependabot-preview[bot]

composer.json

@@ -29,7 +29,7 @@
     "phpunit/phpunit": "^7.5.20",
     "psalm/plugin-phpunit": "~0.8.1",
     "symfony/filesystem": "^4.4.0",
-    "vimeo/psalm": "^3.8.2"
+    "vimeo/psalm": "^3.8.3"
   },
   "config": {
     "platform": {