Merge pull request #2175 from prestist/new-upstream-release-2.25

docs/release-notes: update for 2.25.0

Author: prestist

docs/release-notes.md

@@ -4,20 +4,27 @@ nav_order: 9
 
 # Release Notes
 
-## Upcoming Ignition 2.25.0 (unreleased)
+## Upcoming Ignition 2.26.0 (unreleased)
+
+### Breaking changes
+
+### Features
+
+### Changes
+
+### Bug fixes
+
+
+## Ignition 2.25.0 (2025-12-11)
 
 Starting with this release, ignition-validate binaries are signed with the
 [Fedora 43 key](https://getfedora.org/security/).
 
-### Breaking changes
-
 ### Features
 
 - The name for custom clevis pins is not validated by Ignition anymore, enabling the use of arbitrary custom pins _(3.6.0-exp)_
 - Add NVIDIA BlueField provider
 
-### Changes
-
 ### Bug fixes
 
 - Fix EnsureGroup to be idempotent when group already exists ([#2158](https://github.com/coreos/ignition/pull/2158))