Migrate CI/CD from Travis CI to GitHub Actions

[Copilot]

Travis CI is deprecated for open source projects. This migrates the CI pipeline to GitHub Actions with updated Perl version support.

Changes

• Created .github/workflows/ci.yml: GitHub Actions workflow with matrix testing across the 5 most recent Perl versions (5.40, 5.38, 5.36, 5.34, 5.32), identical dependency installation via cpanm, and standard build/test cycle
• Updated README.md: Replaced Travis badge with GitHub Actions badge
• Removed .travis.yml: Old configuration no longer needed
• Security: Added explicit contents: read permissions for GITHUB_TOKEN

Workflow Configuration

permissions:
  contents: read

jobs:
  test:
    strategy:
      matrix:
        perl-version: ['5.40', '5.38', '5.36', '5.34', '5.32']

Triggers on pushes and PRs to master branch. Uses shogo82148/actions-setup-perl@v1 for Perl version management.

Original prompt

Migrate the CI/CD from Travis to Github workflows

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💡 You can make Copilot smarter by setting up custom instructions, customizing its development environment and configuring Model Context Protocol (MCP) servers. Learn more Copilot coding agent tips in the docs.

[rvosa]

@copilot the tests were failing, probably because they assume a set of old perl versions. Update this to the 5 most recent major versions counting backward from 5.42

[Copilot]

@copilot the tests were failing, probably because they assume a set of old perl versions. Update this to the 5 most recent major versions counting backward from 5.42

Updated the CI workflow to use the 5 most recent Perl versions: 5.40, 5.38, 5.36, 5.34, and 5.32. Commit: 1dc2c3d