Update mongo Docker tag to v7

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
mongo	major	4.0 -> 7.0

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• [ ] If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[codecov[bot]]

Codecov Report

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

Project coverage is 85.71%. Comparing base (540b5f8) to head (597a8ec).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #42 +/- ## ======================================= Coverage 85.71% 85.71% ======================================= Files 5 5 Lines 112 112 ======================================= Hits 96 96 Misses 16 16 ```

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