[Snyk] Security upgrade python from 3.12-slim to 3.13.0b4-slim (#20)

fix: Dockerfile to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-DEBIAN12-ZLIB-6008963
- https://snyk.io/vuln/SNYK-DEBIAN12-PERL-5489190
- https://snyk.io/vuln/SNYK-DEBIAN12-SHADOW-1559391
- https://snyk.io/vuln/SNYK-DEBIAN12-SHADOW-1559403
- https://snyk.io/vuln/SNYK-DEBIAN12-SHADOW-5423923

Co-authored-by: snyk-bot <snyk-bot@snyk.io>

Dockerfile

@@ -1,5 +1,5 @@
 # Container image that runs your code
-FROM python:3.12-slim
+FROM python:3.13.0b4-slim
 
 # Copies your code file from your action repository to the filesystem path `/` of the container
 COPY entrypoint.sh /entrypoint.sh