Update tests to follow DDEV development

DDEV now standardizes user-level installs and configuration in ~/config/.ddev rather than ~/.ddev. This release simply fixes tests to remove the assumption of ~/.ddev being valid (and does so by removing redundant actions).

This release adds no functionality and does not change the user experience. The release merely

• fixes testing
• updates the github-action-add-on (Thanks Tyler!).
• Updates the test environment to a more recent mariadb version.

Full Changelog: v1.0.0...v1.0.1

What's Changed

• ⏫ bump github-action-add-on by @tyler36 in #4

New Contributors

• @tyler36 made their first contribution in #4