Update Google.php

Fix: Exclude ctz Parameter for All-Day Events to Resolve Android Issue

This PR addresses an issue with the generate method in the Google calendar link generator, specifically for all-day events on Android devices. When the ctz (timezone) parameter is included for all-day events, Android devices encounter problems interpreting the event duration correctly, leading to inaccurate calendar entries.

src/Generators/Google.php

@@ -38,8 +38,11 @@ public function generate(Link $link): string
 
         $dateTimeFormat = $link->allDay ? self::DATE_FORMAT : self::DATETIME_FORMAT;
         $url .= '&dates='.$link->from->format($dateTimeFormat).'/'.$link->to->format($dateTimeFormat);
-        $url .= '&ctz=' . $link->from->getTimezone()->getName();
         $url .= '&text='.urlencode($link->title);
+
+        if (!$link->allDay) {
+            $url .= '&ctz=' . $link->from->getTimezone()->getName();
+        }
 
         if ($link->description) {
             $url .= '&details='.urlencode($link->description);