Merge version 9.1.0+really9.1.0+dfsg2-5+rpi1 and 9.1.0+really9.1.0+dfsg2-5+deb12u1...

diff --cc debian/changelog
index c5ef01debd7bb6c83a4ee11e5d1be43bbc5d6aa7,434d77635a92e1b01bc3b2981a20ec7cb78145cc..d1807d74408798a0b8c0b226370289247d4325e5
--- 1/debian/changelog
--- 2/debian/changelog
+++ b/debian/changelog
@@@ -1,9 -1,11 +1,18 @@@
- vtk9 (9.1.0+really9.1.0+dfsg2-5+rpi1) bookworm-staging; urgency=medium
++vtk9 (9.1.0+really9.1.0+dfsg2-5+rpi1+deb12u1) bookworm-staging; urgency=medium
 +
 +  [changes brought forward from 9.0.1+dfsg1-5+rpi1 by Peter Michael Green <plugwash@raspbian.org> at Tue, 05 Jan 2021 14:46:48 +0000]
 +  * Link with libatomic on armhf too for raspbian.
 +
-  -- Raspbian forward porter <root@raspbian.org>  Mon, 13 Mar 2023 11:59:52 +0000
++ -- Raspbian forward porter <root@raspbian.org>  Sat, 10 Jan 2026 18:14:43 +0000
++
+ vtk9 (9.1.0+really9.1.0+dfsg2-5+deb12u1) bookworm; urgency=medium
+ 
+   * Team upload.
+   [ Markus Blatt ]
+   * Cherry-pick patch from upstream to fix issue with newer expat and
+     appended data. (Closes: 1114938)
+ 
+  -- Santiago Vila <sanvila@debian.org>  Tue, 16 Sep 2025 19:50:00 +0200
  
  vtk9 (9.1.0+really9.1.0+dfsg2-5) unstable; urgency=medium