docs(ci-caching): list all paths that retrigger base-images.yml

Now that base-images.yml's master-push trigger includes the install
script and apt-mirror script (commit 7fff8584), enumerate them in
the workflow-surfaces table instead of the vaguer "base Dockerfile/
workflow" phrasing.

Assisted-by: Claude:claude-opus-4-7
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>