adjust upload size restrictions

Author: goekay

src/main/resources/application.yml

@@ -8,9 +8,9 @@ spring:
     password: ${db.password}
   servlet:
     multipart:
-      max-file-size: -1
-      max-request-size: -1
-      file-size-threshold: 10GB
+      max-file-size: 1GB
+      max-request-size: 1GB
+      file-size-threshold: 10GB  # we should not hit this, since 1GB will be the limiting factor earlier
 
 server:
   address: ${server.host}