GAP-2533: Retrospectively fix BST ads in prod (#276)

* GAP-2533: Retrospectively fix BST ads in prod

* GAP-2533: Including release time

* GAP-2533: Overriding UTC opening/closing dates as Europe/London time

* GAP-2533: Update scheduled closing times too

* GAP-2533: Fix syntax

* GAP-2533: Hard code datetimes for BST

src/main/resources/db/migration/V1_101__retrospectively_fix_bst_ads.sql

@@ -0,0 +1,13 @@
+UPDATE grant_advert
+    SET opening_date = opening_date - INTERVAL '1 hour'
+WHERE opening_date > '2024-03-31 01:00:00'::TIMESTAMP
+    AND opening_date < '2024-10-27 02:00:00'::TIMESTAMP
+    AND created > '2023-09-28 12:00:00'::TIMESTAMP
+    AND status = 'SCHEDULED';
+
+UPDATE grant_advert
+    SET closing_date = closing_date - INTERVAL '1 hour'
+WHERE closing_date > '2024-03-31 01:00:00'::TIMESTAMP
+    AND closing_date < '2024-10-27 02:00:00'::TIMESTAMP
+    AND created > '2023-09-28 12:00:00'::TIMESTAMP
+    AND (status = 'PUBLISHED' OR status = 'SCHEDULED');