fix: services/arms/judge/Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN13-OPENSSL-13174592
- https://snyk.io/vuln/SNYK-DEBIAN13-OPENSSL-13174592
- https://snyk.io/vuln/SNYK-DEBIAN13-OPENSSL-13174602
- https://snyk.io/vuln/SNYK-DEBIAN13-OPENSSL-13174605
- https://snyk.io/vuln/SNYK-DEBIAN13-OPENSSL-13174605

Author: snyk-bot

services/arms/judge/Dockerfile

@@ -1,6 +1,6 @@
 # syntax=docker/dockerfile:1
 # Judge Arm Dockerfile - Multi-stage build for Python service
-FROM python:3.13.7-slim as builder
+FROM python:3.14.2-slim as builder
 
 # Install system dependencies
 RUN apt-get update && apt-get install -y \
@@ -23,7 +23,7 @@ RUN poetry config virtualenvs.create false && \
     poetry install --only main --no-interaction --no-ansi
 
 # Runtime stage
-FROM python:3.13.7-slim
+FROM python:3.14.2-slim
 
 # Install runtime dependencies
 RUN apt-get update && apt-get install -y \