Update python Docker tag to v3.13

Signed-off-by: Mend Renovate <[email protected]>

Dockerfile

@@ -1,6 +1,6 @@
 # This Dockerfile is based on the pattern recommended by the pipenv docs:
 # https://pipenv.pypa.io/en/latest/docker.html
-FROM python:3.12@sha256:752ce4a954589eb94d32849db7ede17ce120945cb71f6feabab3697550932ff9 as builder
+FROM python:3.13@sha256:c286f03b5b7ffbefa9c45b87c4d27f952b3706b180dc591cd983800d2e6a1fcb as builder
 
 RUN pip install --no-cache-dir pipenv==2023.12.1
 ENV PIPENV_VENV_IN_PROJECT=1
@@ -11,7 +11,7 @@ RUN pipenv --no-site-packages install -v --deploy
 
 
 ############################################################
-FROM python:3.12-slim@sha256:74d1a6838efbb088791d20f0c9dc4e4819e499c01ceecebcdaaccc249496268a as final
+FROM python:3.13-slim@sha256:ad05c52e178ac777dd1d6d7df5ddf5f16364cfb1cd5f9f016193eafd92ab4854 as final
 
 RUN adduser --uid 19876 summarizer-bot && \
     mkdir /app && \