added v0.71.2 release notes and upgraded status (#453)

Signed-off-by: krystal <56278409+theekrystallee@users.noreply.github.com>

Author: theekrystallee

hedera/networks/release-notes/services.mdx

@@ -10,11 +10,23 @@ Visit the [Hedera status page](https://status.hedera.com/) for the latest versio
   **MAINNET UPDATE: MARCH 11, 2026**
 </Info>
 
+### [**Build 0.71.2**](https://github.com/hiero-ledger/hiero-consensus-node/releases/tag/v0.71.2)
+
 <Check>
-  **TESTNET UPDATED: FEBRUARY 19, 2026**
+  **TESTNET UPDATED: MARCH 5, 2026**
 </Check>
 
+<Accordion title="What's Changed">
+Chores
+  * cherry-pick reject file append on files with empty key list #23831 #23900 by @AlexKehayov
+</Accordion>
+
 ### [**Build 0.71.1**](https://github.com/hiero-ledger/hiero-consensus-node/releases/tag/v0.71.1)
+
+<Check>
+  **TESTNET UPDATED: FEBRUARY 19, 2026**
+</Check>
+
 <Accordion title="What's Changed">
 Chores
 * cherry-pick (release/0.71): Disabling hooks #23502 by @akdev