Upgrade to procrastinator 5 (#33)

Author: dafeder

composer.json

@@ -11,7 +11,7 @@
     "require": {
         "php": ">=7.4 <8.2",
         "ext-curl": "*",
-        "getdkan/procrastinator": "^4.0.2",
+        "getdkan/procrastinator": "^5.0.0",
         "guzzlehttp/guzzle": "^6.5.8 || ^7.4.5"
     },
     "require-dev": {