[CE/SP] Force rebuild of Base Image (#30723)

Forces a rebuild of the CE/SP base image, updating
OS dependencies and installing the latest version of node.

GitOrigin-RevId: a172b7cf1b19e303ea19d4392ee43f7043bb96ad

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="2025-12-17"
+ENV REBUILT_AFTER="2026-01-13"
 
 # Install dependencies
 # --------------------