feat!: drop support for php 8.0

Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>

appinfo/info.xml

@@ -39,7 +39,7 @@
 	<screenshot>https://raw.githubusercontent.com/nextcloud/calendar/main/screenshots/week_room_suggestion.png</screenshot>
 	<screenshot>https://raw.githubusercontent.com/nextcloud/calendar/main/screenshots/week_sidebar.png</screenshot>
 	<dependencies>
-		<php min-version="8.0" max-version="8.3" />
+		<php min-version="8.1" max-version="8.3" />
 		<nextcloud min-version="30" max-version="30" />
 		<backend>caldav</backend>
 	</dependencies>

composer.json

@@ -1,7 +1,7 @@
 {
     "config": {
         "platform": {
-            "php": "8.0"
+            "php": "8.1"
         },
         "sort-packages": true,
         "optimize-autoloader": true,
@@ -16,7 +16,7 @@
         }
     },
     "require": {
-        "php": ">= 8.0 <=8.3",
+        "php": ">= 8.1 <=8.3",
         "bamarni/composer-bin-plugin": "^1.8.2"
     },
     "scripts": {