changelog: mention deprecations

Author: aviau

docs/changelog/overview.mdx

@@ -24,6 +24,11 @@ Release notes for the Flare Platform can be found on the [product documentation
   This is useful for developers building Flare API automations with AI-powered integrated development environments (IDE).
 </Update>
 
+<Update label="2025-07" description="API - July 2025">
+  The `leaksdb/credentials` and `/leaksdb/v2/credentials` endpoints were marked as deprecated and should be replaced by
+  [/astp/v2/credentials/_search <Icon icon="code" size={16} />](/api-reference/astp/endpoints/post-credentials-search).
+</Update>
+
 <Update label="2025-05-15" description="Python SDK - v1.0.0">
   Released version 1.0.0 of the
   [Python SDK <Icon icon="book" size={16} />](/sdk/python).