fix: update unit test coverage threshold to 81.3%

Author: MrPunyapal

composer.json

@@ -58,7 +58,7 @@
             "rector --dry-run",
             "pint --test"
         ],
-        "test:unit": "pest --parallel --coverage --exactly=83.3",
+        "test:unit": "pest --parallel --coverage --exactly=81.3",
         "test:types": "phpstan",
         "test": [
             "@test:lint",