fix: cmd/suggestion/nas/darts/v1beta1/Dockerfile to reduce vulnerabil…

…ities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN12-ZLIB-6008963
- https://snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-1560739
- https://snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-5733385
- https://snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-5733390
- https://snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-5733398

cmd/suggestion/nas/darts/v1beta1/Dockerfile

@@ -9,7 +9,7 @@ RUN if [ "$(uname -m)" = "ppc64le" ]; then \
     fi && \
     chmod +x /bin/grpc_health_probe
 
-FROM python:3.9-slim
+FROM python:3.14.0a3-slim
 ENV TARGET_DIR /opt/katib
 ENV SUGGESTION_DIR cmd/suggestion/nas/darts/v1beta1