Properly clean up indexes after test suite runs

[ellnix]

Pull Request

Related issue

Fixes #298

PR checklist

Please check if your PR fulfills the following requirements:

• [X] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• [X] Have you read the contributing guidelines?
• [X] Have you made sure that the title is accurate and descriptive of the changes?

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (7fff94d) 88.58% compared to head (85f8a53) 88.58%.

:exclamation: Current head 85f8a53 differs from pull request most recent head 7aa05a2. Consider uploading reports for the commit 7aa05a2 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #299 +/- ## ======================================= Coverage 88.58% 88.58% ======================================= Files 10 10 Lines 648 648 ======================================= Hits 574 574 Misses 74 74 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[ellnix]

@brunoocasali I'm sorry, rebasing made the approval stale...

[ellnix]

bors merge

[meili-bors[bot]]

Build succeeded:

• integration-tests (Rails 6.1 with Ruby 2.7)
• integration-tests (Rails 6.1 with Ruby 3.0)
• integration-tests (Rails 6.1 with Ruby 3.1)
• integration-tests (Rails 7 with Ruby 2.7)
• integration-tests (Rails 7 with Ruby 3.0)
• integration-tests (Rails 7 with Ruby 3.1)
• linter-check
• smoke-test