chore(deps): update python docker tag to v3.13 (#40)

| datasource | package | from | to   |
| ---------- | ------- | ---- | ---- |
| docker     | python  | 3.12 | 3.13 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

containers/Dockerfile.sidecar

@@ -34,7 +34,7 @@ RUN --mount=type=cache,target=/go/pkg/mod --mount=type=cache,target=/root/.cache
 # pip will build everything inside /usr/ since this is the case
 # we should build and then copy every file into a destination that will
 # then copy into the distroless container
-FROM python:3.12-slim AS pythonbuilder
+FROM python:3.13-slim AS pythonbuilder
 RUN apt-get update && \
     apt-get install -y postgresql-common build-essential && \
     /usr/share/postgresql-common/pgdg/apt.postgresql.org.sh -y && \