update release notes for ingestion with v0.7.1 (#417)

Author: nayanj98

docs/release/ingestion/v0.7.0.mdx

@@ -1,9 +1,9 @@
 ---
-title: "OLake Go (v0.7.0)"
+title: "OLake Go (v0.7.0 - v0.7.1)"
 ---
 
-# OLake Go (v0.7.0)
-April 21, 2026 – April 30, 2026
+# OLake Go (v0.7.0 - v0.7.1)
+April 21, 2026 – May 05, 2026
 
 ## 🎯 What's New
 
@@ -15,6 +15,10 @@ April 21, 2026 – April 30, 2026
 
 3. **Schema filtering for PostgreSQL discovery -** <br/> Added an optional schemas config field to restrict the discover operation to user-specified PostgreSQL schemas. When omitted, existing behaviour is preserved and all non-system schemas are discovered.
 
+### Destinations
+
+1. **Skip equality deletes for CDC inserts post-backfill -** <br/> Equality deletes are now skipped for CDC inserts once the backfill→CDC overlap window is complete, reducing unnecessary write overhead. A new `dedup_inserts` flag on the Iceberg `olake_2pc` table property tracks this — Java sets it to `true` on backfill commit, and Go clears it to `false` after the first successful CDC commit. This applies to both the Arrow and legacy gRPC writers.
+
 ## 🔧 Bug Fixes & Stability
 
 1. **Upgrade pgx/v5 to v5.9.2 for security fixes -** <br/> Upgraded `github.com/jackc/pgx/v5` from `v5.7.3` to `v5.9.2` to remediate two security vulnerabilities: a critical memory-safety flaw (`CVE-2026-33816`) that could allow memory corruption and a low-severity SQL injection advisory (`GHSA-j88v-2chj-qfwx`). No existing functionality is affected by this upgrade.