ci: enable tests for python 3.7

[Giglium]

No description provided.

[Copilot]

Pull request overview

This PR enables automated testing for Python 3.7 by adding a new GitHub Actions workflow and updating the Makefile to include the new workflow in local testing.

• Added a new GitHub Actions workflow test_legacy.yml specifically for testing Python 3.7 compatibility
• Updated the Makefile's act.test target to include the new legacy test workflow

Reviewed changes

Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.

File	Description
.github/workflows/test_legacy.yml	New workflow that tests the package on Python 3.7 using minimal dependencies (asyncmock and httpx[brotli]) installed via pip, bypassing uv which requires Python >= 3.8
Makefile	Added the new legacy test workflow to the act.test target for local workflow testing

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[Copilot]

Two steps have the same name "Run tests". This creates confusion and makes it difficult to identify which step failed in CI logs. The first step (line 32) should be renamed to reflect that it installs dependencies, not runs tests.

Suggested change

	- name: Run tests
	- name: Install dependencies

[Giglium]

@copilot can you fix the CI problem by only modify the file test_legacy.yml

[Copilot]

@Giglium I've opened a new pull request, #140, to work on those changes. Once the pull request is ready, I'll request review from you.

[Giglium]

I closed the PR since the compatibility with Python 3.7 is too much effort for a deprecated version.