fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN12-EXPAT-7855502
- https://snyk.io/vuln/SNYK-DEBIAN12-EXPAT-7855503
- https://snyk.io/vuln/SNYK-DEBIAN12-EXPAT-7855507
- https://snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-6277507
- https://snyk.io/vuln/SNYK-DEBIAN12-SYSTEMD-6277507

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.13.0a4-slim as build
+FROM python:3.13.0rc2-slim as build
 WORKDIR /wheels
 RUN apk add --no-cache \
     ncurses-dev \
@@ -7,7 +7,7 @@ COPY docker_reqs.txt /opt/instainfo/requirements.txt
 RUN pip3 wheel -r /opt/instainfo/requirements.txt
 
 
-FROM python:3.13.0a4-slim
+FROM python:3.13.0rc2-slim
 WORKDIR /home/instainfo
 RUN adduser -D instainfo