feat: update dependencies

[aschuma]

No description provided.

[Copilot]

Pull request overview

Updates the runtime/container build and Python dependencies to newer versions, and adds a simple HTTP health endpoint to support container health probing.

Changes:

• Bump Python dependencies in requirements.txt (including Flask/Werkzeug and vvspy).
• Rework the Docker image to Python 3.13 on Debian bookworm with a multi-stage venv build, non-root runtime user, and a container HEALTHCHECK.
• Add a /health endpoint and introduce a .dockerignore to reduce Docker build context.

Reviewed changes

Copilot reviewed 3 out of 4 changed files in this pull request and generated 2 comments.

File	Description
requirements.txt	Updates pinned dependency versions.
Dockerfile	Moves to Python 3.13 bookworm, builds deps into a venv in a builder stage, runs as non-root, and adds a healthcheck.
app.py	Adds a /health route returning a JSON response for container health probing.
.dockerignore	Excludes VCS metadata and common non-runtime files from Docker build context.

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