run bandit, broaden test workflow filter, update readme

[bckohan]

No description provided.

[Copilot]

Pull request overview

Updates CI triggering rules and documentation to reflect broader source/test changes and current database version support.

Changes:

• Broadened GitHub Actions paths filters to run tests on any changes under src/ and tests/.
• Updated README database support badges to newer minimum versions.

Reviewed changes

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

File	Description
README.md	Updates documented minimum supported DB versions in badges.
.github/workflows/test.yml	Broadens workflow paths filters for PR-triggered test runs.

---

💡 Add Copilot custom instructions for smarter, more guided reviews. Learn how to get started.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[github-advanced-security]

You are seeing this message because GitHub Code Scanning has recently been set up for this repository, or this pull request contains the workflow file for the Code Scanning tool.

What Enabling Code Scanning Means:

• The 'Security' tab will display more code scanning analysis results (e.g., for the default branch).
• Depending on your configuration and choice of analysis tool, future pull requests will be annotated with code scanning analysis results.
• You will be able to see the analysis results for the pull request's branch on this overview once the scans have completed and the checks have passed.

For more information about GitHub Code Scanning, check out
the documentation.