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:dcead327659001363213053b1bb819d908280efdea0a3c5ea4e62bfba34b141e as builder
+FROM python:3.13@sha256:a76a2a0812219239b78f61e00986e413bf876531621190548bad64d3a43f7ae3 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@sha256:10f3aaab98db50cba827d3b33a91f39dc9ec2d02ca9b85cbc5008220d07b17f3 as final
+FROM python:3.13-slim@sha256:1127090f9fff0b8e7c3a1367855ef8a3299472d2c9ed122948a576c39addeaf1 as final
 
 RUN adduser --uid 19876 summarizer-bot && \
     mkdir /app && \