Update challenge Dockerfile

Author: cyderize

public/challenge/2025/mznc2025/Dockerfile

@@ -179,7 +179,7 @@ RUN \
 # Setup of the base image
 
 # Get base image with Ubuntu 24.04
-FROM minizinc/minizinc:2.9.0-latest
+FROM minizinc/minizinc:2.9.3-noble
 
 # Copy unpacked MiniZinc installation from the build image
 COPY --from=builder /minizinc /minizinc

src/pages/challenge/2025/call_for_problems.mdx

@@ -28,7 +28,7 @@ whether they are an entrant in the challenge.
 ### Important dates and deadlines:
 
 - Problem submission open: **now**
-- Problem submission deadline: **{challenge.problemSubmissionDeadline}**
+- Problem submission deadline: ~~Fri, 16 May 2025~~ **{challenge.problemSubmissionDeadline}**
 
 ### Problem submission