Mark 1.31 as stable

Bug: b/456812190

Author: Databean

base/debian/changelog

@@ -21,7 +21,7 @@ cuttlefish-common (1.32.0) unstable; urgency=medium
 
  -- Chad Reynolds <[email protected]>  Fri, 07 Nov 2025 12:58:19 -0800
 
-cuttlefish-common (1.31.0) unstable; urgency=medium
+cuttlefish-common (1.31.0) stable; urgency=medium
 
   * Mark 1.30 as unstable by @jemoreira in https://github.com/google/android-cuttlefish/pull/1742
   * Start development of version 1.31 by @jemoreira in https://github.com/google/android-cuttlefish/pull/1744

frontend/debian/changelog

@@ -10,7 +10,7 @@ cuttlefish-frontend (1.32.0) unstable; urgency=medium
 
  -- Chad Reynolds <[email protected]>  Fri, 07 Nov 2025 12:59:15 -0800
 
-cuttlefish-frontend (1.31.0) unstable; urgency=medium
+cuttlefish-frontend (1.31.0) stable; urgency=medium
 
   * N/A