chore: add extensions required by Nextcloud as dependencies

Signed-off-by: Ferdinand Thiessen <[email protected]>

Author: susnux

composer.json

@@ -18,6 +18,8 @@
 	},
 	"require": {
 		"php": "^8.1",
+		"ext-ctype": "*",
+		"ext-mbstring": "*",
 		"aws/aws-sdk-php": "^3.349",
 		"bantu/ini-get-wrapper": "v1.0.1",
 		"cweagans/composer-patches": "^1.7",