fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE316-E2FSPROGS-3339843
- https://snyk.io/vuln/SNYK-ALPINE316-EXPAT-3028183
- https://snyk.io/vuln/SNYK-ALPINE316-EXPAT-3062883
- https://snyk.io/vuln/SNYK-ALPINE316-KRB5-3136432
- https://snyk.io/vuln/SNYK-ALPINE316-OPENSSL-3314624

Dockerfile

@@ -2,7 +2,7 @@ ARG GIT_COMMIT=unspecified
 ARG GIT_REMOTE=unspecified
 ARG VERSION=unspecified
 
-FROM python:3.9.13-alpine
+FROM python:3.12.0b1-alpine
 
 ARG GIT_COMMIT
 ARG GIT_REMOTE