fix: docs/samples/v1beta1/transformer/feast/driver_transformer.Docker…

…file to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN12-EXPAT-7855502
- https://snyk.io/vuln/SNYK-DEBIAN12-EXPAT-7855503
- https://snyk.io/vuln/SNYK-DEBIAN12-EXPAT-7855507
- https://snyk.io/vuln/SNYK-DEBIAN12-ZLIB-6008963
- https://snyk.io/vuln/SNYK-DEBIAN12-PAM-6178914

docs/samples/v1beta1/transformer/feast/driver_transformer.Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.9-slim
+FROM python:3.13.0rc2-slim
 
 COPY driver_transformer driver_transformer
 WORKDIR driver_transformer