Update Ubuntu runner from ubuntu-20.04 to ubuntu-latest in GitHub workflows

[pamelafox]

GitHub workflow files are using the outdated ubuntu-20.04 runner image.

Issue: Ubuntu 20.04 runners are deprecated and will be removed by GitHub.

Recommendation: Please update all instances of ubuntu-20.04 to ubuntu-latest in your GitHub Actions workflow files.

Benefits of ubuntu-latest:

• Always uses the most recent stable Ubuntu LTS version
• Receives the latest security updates and patches
• Includes updated tooling and dependencies
• Future-proofs your workflows against deprecation

Files that need updating: Check the workflow files in .github/workflows/ directory.

Example change:

# Before
runs-on: ubuntu-20.04

# After  
runs-on: ubuntu-latest

Please review and update the affected workflow files to use ubuntu-latest instead of the deprecated ubuntu-20.04.

Details

Pattern: ubuntu-20\.04

File: .github/workflows/tests.yaml

Found matches:

Line 16:

os: ["ubuntu-20.04"]

Repository: https://github.com/Azure-Samples/azure-postgres-pgvector-python

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This issue was automatically created by the GitHub Repo Maintainer Agent.