increase daily lamp mem allocation (#86)

Author: ankoure

mbta-performance/.chalice/config.json

@@ -21,7 +21,7 @@
         "process_daily_lamp": {
           "iam_policy_file": "policy-lamp-ingest.json",
           "lambda_timeout": 60,
-          "lambda_memory_size": 2048
+          "lambda_memory_size": 4096
         },
         "process_yesterday_lamp": {
           "iam_policy_file": "policy-lamp-ingest.json",