Post-release version bump to 12.2.0

Signed-off-by: Jiri Denemark <jdenemar@redhat.com>

NEWS.rst

@@ -8,6 +8,20 @@ the changes introduced by each of them.
 For a more fine-grained view, use the `git log`_.
 
 
+v12.2.0 (unreleased)
+====================
+
+* **Security**
+
+* **Removed features**
+
+* **New features**
+
+* **Improvements**
+
+* **Bug fixes**
+
+
 v12.1.0 (2026-03-02)
 ====================
 

meson.build

@@ -1,6 +1,6 @@
 project(
   'libvirt', 'c',
-  version: '12.1.0',
+  version: '12.2.0',
   license: 'LGPLv2+',
   meson_version: '>= 0.57.0',
   default_options: [