fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-ALPINE319-OPENSSL-6148881
- https://snyk.io/vuln/SNYK-ALPINE319-OPENSSL-6148881
- https://snyk.io/vuln/SNYK-ALPINE319-OPENSSL-6159994
- https://snyk.io/vuln/SNYK-ALPINE319-OPENSSL-6159994

Dockerfile

@@ -1,5 +1,5 @@
 # API Dockerfile
-FROM python:3.9-alpine
+FROM python:3.13.0a3-alpine
 
 # Copy requirements file
 COPY requirements.txt .