Bump builder base from 3.12 to 3.13

Author: ChrisLovering

Dockerfile

@@ -43,7 +43,7 @@ RUN /build_python.sh 3.13.1
 FROM builder-py-base as builder-py-3_13t
 RUN /build_python.sh 3.13.1t
 # ------------------------------------------------------------------------------
-FROM python:3.12-slim-bookworm as base
+FROM python:3.13-slim-bookworm as base
 
 ENV PIP_DISABLE_PIP_VERSION_CHECK=1 \
     PIP_NO_CACHE_DIR=false