doc/user: polish v0.85 release notes (MaterializeInc#24859)

Author: morsapaes

doc/user/content/releases/v0.85.md

@@ -1,11 +1,16 @@
 ---
 title: "Materialize v0.85"
 date: 2024-01-31
-released: false
+released: true
+patch: 2
 ---
 
 ## v0.85
 
-{{< warning >}}
-This version of Materialize is not yet released.
-{{< /warning >}}
+#### Bug fixes and other improvements
+
+* Fix a bug where [`DISCARD ALL`](/sql/discard/) did not consider system or role
+  defaults {{% gh 24601 %}}.
+
+* Fix a bug causing the `mz_monitor` and `mz_monitor_redacted` system roles to
+  not show up in the `mz_roles` system catalog table {{% gh 24617 %}}.

doc/user/content/releases/v0.86.md

@@ -0,0 +1,11 @@
+---
+title: "Materialize v0.86"
+date: 2024-02-07
+released: false
+---
+
+## v0.86
+
+{{< warning >}}
+This version of Materialize is not yet released.
+{{< /warning >}}