chore(deps): update python docker tag to v3.13.9 (#142)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

build-images.sh

@@ -24,7 +24,7 @@ pushd webssh_tmp
 wget https://github.com/huashengdun/webssh/archive/refs/tags/v${webssh_version}.tar.gz -O webssh.tar.gz
 tar xvzf webssh.tar.gz -C build --strip-components=1
 pushd build
-webssh=$(buildah from docker.io/python:3.13.7-alpine)
+webssh=$(buildah from docker.io/python:3.13.9-alpine)
 buildah add "${webssh}" . /code
 buildah run \
     --workingdir '/code' \