feat: add server costs for July 2024

Included "Server Costs" under membership expenses to track costs more accurately. This adjustment ensures alignment with actual expenses related to membership services.

data/finances.json

@@ -40,6 +40,9 @@
         "7": {
             "Membership Fees": {
                 "EUR": 395
+            },
+            "Server Costs": {
+                "EUR": -32.72
             }
         }
     }