Upgrade to Carbon v3 and PHP 8.1+v5.0.0

- Update nesbot/carbon from ^2.42 to ^3.0
- Update PHP requirement from ^7.4||^8.0 to ^8.1
- Fix nullable parameter syntax in ScoTracking::setLatestDate()
- Remove version field from composer.json for GitHub hosting

BREAKING CHANGE: Requires PHP 8.1+ due to Carbon v3 dependency

1 files changed, 1 insertions, 1 deletions

diff --git a/src/Entity/ScoTracking.php b/src/Entity/ScoTracking.php
index 64e83b2..e78e02e 100644
--- a/src/Entity/ScoTracking.php
+++ b/src/Entity/ScoTracking.php
@@ -257,7 +257,7 @@ class ScoTracking
         return $this->latestDate;
     }
 
-    public function setLatestDate(Carbon $latestDate = null)
+    public function setLatestDate(?Carbon $latestDate = null)
     {
         $this->latestDate = $latestDate;
     }