Increases default upload size to 512M (#145)

Co-authored-by: DOMjudge team <team@domjudge.org>

Author: meisterT

provision-contest/ansible/group_vars/all/all.yml.example

@@ -60,8 +60,8 @@ TIMEZONE: "Europe/Amsterdam"
 PHP_FPM_MAX_CHILDREN: 400
 PHP_FPM_MAX_REQUESTS: 500
 PHP_MEMORY_LIMIT: 1024M
-PHP_UPLOAD_MAX_FILESIZE: 256M
-PHP_POST_MAX_SIZE: 256M
+PHP_UPLOAD_MAX_FILESIZE: 512M
+PHP_POST_MAX_SIZE: 512M
 PHP_MAX_FILE_UPLOADS: 101
 
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