chore(deps): update registry.suse.com/bci/python:3.6.15 docker digest to caa253c

Author: renovate[bot]

ci/images/Dockerfile.python3.6

@@ -1,5 +1,5 @@
 # Base-image
-FROM registry.suse.com/bci/python:3.6.15@sha256:255a6e156f93d0def500559d4ed5a440eacdd05ef2d398f27c696d612eded46f AS base
+FROM registry.suse.com/bci/python:3.6.15@sha256:caa253c7ac99fbbbb87e324da71b329d0ffd11c2df8edd655e5f78e2b06ad5bc AS base
 
 ARG GCC_VERSION=14
 ARG GITHUB_RAW_URL=https://raw.githubusercontent.com