update change event date of ckb olen (#540)

CHANGELOG.md

@@ -3,6 +3,7 @@
 ### Backend
 - Fix KBO statuses not being displayed [OP-3584]
 - datafix: update NIS2019 end dates and link additional NIS2025 to werkingsgebieden [part of OP-3566]
+- datafix: correct date of change event of ckb olen [OP-3594]
 ### Deploy Notes
 ```
 drc restart migrations; drc logs -ft --tail=200 migrations

config/migrations/2025/20250430144720-update-date-change-event-ckb-olen.sparql

@@ -0,0 +1,15 @@
+PREFIX dct: <http://purl.org/dc/terms/>
+
+DELETE {
+  GRAPH ?g {
+    <http://data.lblod.info/id/veranderingsgebeurtenissen/68021371D4DB18EC8BA958FC> dct:date ?oldDate .
+  }
+} INSERT {
+  GRAPH ?g {
+    <http://data.lblod.info/id/veranderingsgebeurtenissen/68021371D4DB18EC8BA958FC> dct:date "2023-11-30"^^xsd:date .
+  }
+} WHERE {
+  GRAPH ?g {
+    <http://data.lblod.info/id/veranderingsgebeurtenissen/68021371D4DB18EC8BA958FC> dct:date ?oldDate .
+  }
+}