make loginLocationsJson mediumtext

it seems we overflow atleast in the demo cloudron
TEXT – 64KB (65,535 characters)
MEDIUMTEXT – 16MB (16,777,215 characters)

migrations/schema.sql

@@ -32,7 +32,7 @@ CREATE TABLE IF NOT EXISTS users(
     resetTokenCreationTime TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
     active BOOLEAN DEFAULT 1,
     avatar MEDIUMBLOB NOT NULL,
-    locationJson TEXT, // { locations: [{ ip, userAgent, city, country, ts }] }
+    loginLocationsJson MEDIUMTEXT, // { locations: [{ ip, userAgent, city, country, ts }] }
 
     INDEX creationTime_index (creationTime),
     PRIMARY KEY(id));