🤖 Upsert Earth/Japan data for DojoMap

Author: yasulab

events_japan.json

@@ -233,7 +233,7 @@
     "event_end_at": "2025-06-15T16:30:00.000+09:00",
     "event_url": "https://coderdojo-hikari.connpass.com/event/356778/",
     "prefecture": "山口",
-    "participants": 0,
+    "participants": 1,
     "event_update_at": "2025-06-02T21:08:36.000+09:00",
     "address": "山口県光市浅江1-4-14 (アイオイビル3F)",
     "place": "コワーキングスペース HiKARiBA",
@@ -249,7 +249,7 @@
     "event_end_at": "2025-06-29T15:30:00.000+09:00",
     "event_url": "https://coderdojo-hamamatsu.connpass.com/event/356858/",
     "prefecture": "静岡",
-    "participants": 8,
+    "participants": 9,
     "event_update_at": "2025-05-25T15:31:38.000+09:00",
     "address": "静岡県浜松市中央区鴨江町1番地",
     "place": "浜松市鴨江アートセンター（201号室）",
@@ -393,7 +393,7 @@
     "event_end_at": "2025-06-15T12:30:00.000+09:00",
     "event_url": "https://coderdojo-seto.connpass.com/event/358499/",
     "prefecture": "愛知",
-    "participants": 12,
+    "participants": 15,
     "event_update_at": "2025-06-08T13:50:44.000+09:00",
     "address": "瀬戸市道泉町53番地の5",
     "place": "ぐるっぺ道泉",
@@ -457,7 +457,7 @@
     "event_end_at": "2025-06-22T16:00:00.000+09:00",
     "event_url": "https://coderdojo-mizonokuchi.connpass.com/event/356896/",
     "prefecture": "神奈川",
-    "participants": 4,
+    "participants": 3,
     "event_update_at": "2025-05-25T22:41:27.000+09:00",
     "address": "〒213-0001 川崎市高津区溝口 2-20-1",
     "place": "すくらむ21",
@@ -553,7 +553,7 @@
     "event_end_at": "2025-06-14T16:00:00.000+09:00",
     "event_url": "https://coderdojo-isehara.connpass.com/event/354537/",
     "prefecture": "神奈川",
-    "participants": 3,
+    "participants": 4,
     "event_update_at": "2025-05-09T07:01:16.000+09:00",
     "address": "伊勢原市田中２９７番地",
     "place": "伊勢原市民活動サポートセンター",
@@ -713,7 +713,7 @@
     "event_end_at": "2025-06-15T16:30:00.000+09:00",
     "event_url": "https://coderdojo-iwata.connpass.com/event/357574/",
     "prefecture": "静岡",
-    "participants": 7,
+    "participants": 8,
     "event_update_at": "2025-05-31T17:37:27.000+09:00",
     "address": "〒438-0831 静岡県磐田市上新屋678番地1",
     "place": "磐田市民文化会館 創作活動室1",