fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN11-GNUTLS28-6159417
- https://snyk.io/vuln/SNYK-DEBIAN11-GNUTLS28-6159419
- https://snyk.io/vuln/SNYK-DEBIAN11-PERL-6085272
- https://snyk.io/vuln/SNYK-DEBIAN11-SHADOW-526940
- https://snyk.io/vuln/SNYK-DEBIAN11-ZLIB-6008961

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.11-slim-bullseye as build
+FROM python:3.13.0a2-slim as build
 WORKDIR /wheels
 
 COPY requirements.txt /opt/sherlock/
@@ -6,7 +6,7 @@ RUN apt-get update \
   && apt-get install -y build-essential \
   && pip3 wheel -r /opt/sherlock/requirements.txt
 
-FROM python:3.11-slim-bullseye
+FROM python:3.13.0a2-slim
 WORKDIR /opt/sherlock
 
 ARG VCS_REF