[CE/SP] Force rebuild of base image (#30400)

GitOrigin-RevId: 32e8b96e8ed74bf7f51e52058cd71ca7636d8f50

server-ce/Dockerfile-base

@@ -10,7 +10,7 @@ ENV TEXMFVAR=/var/lib/overleaf/tmp/texmf-var
 
 # Update to ensure dependencies are updated
 # ------------------------------------------
-ENV REBUILT_AFTER="2025-10-30"
+ENV REBUILT_AFTER="2025-12-17"
 
 # Install dependencies
 # --------------------