Fix setup-uv cache dependency config in lint and test workflows

[smortezah]

Summary

Configure astral-sh/setup-uv cache invalidation explicitly in the lint workflow.

Changes

• keep enable-cache: true
• add cache-dependency-glob: pyproject.toml

Why

The workflow enables uv caching, but the repository does not appear to contain the default dependency files used by setup-uv for cache keys (uv.lock or requirements*.txt). Pointing cache invalidation at pyproject.toml avoids the warning and keeps caching enabled.

[Copilot]

Pull request overview

Adds cache-dependency-glob: pyproject.toml to setup-uv in both the lint and test workflows so the uv cache key is based on pyproject.toml instead of missing default files. Also adds a Copilot PR description template.

Changes:

• Add cache-dependency-glob: pyproject.toml to setup-uv in lint.yml and test.yml
• Add .copilot-pull-request-description-instructions.md PR template

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
.github/workflows/lint.yml	Add cache dependency glob for uv
.github/workflows/test.yml	Add cache dependency glob for uv
.copilot-pull-request-description-instructions.md	New PR description template for Copilot

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[alesanfra]

It looks like pyproject.toml is already in the default dependency files according to the doc, am I missing something?