Bump python from 3.12.2-alpine to 3.12.3-alpine

Bumps python from 3.12.2-alpine to 3.12.3-alpine.

---
updated-dependencies:
- dependency-name: python
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM python:3.12.2-alpine
+FROM python:3.12.3-alpine
 
 # Download PlantUML + dependencies
 RUN mkdir -p /usr/share/man/man1 && apk add --no-cache openjdk8 graphviz && \