Set Jackson timezone to Lisbon

[BrunoRosendo]

This PR changes the default serialization timezone to Lisbon in order to avoid mistakes with daylight saving times.

Review checklist

• [ ] Properly documents API changes in the corresponding controller test
• [ ] Contains enough appropriate tests
• [ ] Behavior is as expected
• [ ] Clean, well structured code

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (0a5b495) 88.49% compared to head (217ba24) 88.49%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## develop #163 +/- ## ========================================== Coverage 88.49% 88.49% Complexity 345 345 ========================================== Files 61 61 Lines 791 791 Branches 65 65 ========================================== Hits 700 700 Misses 57 57 Partials 34 34 ```

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[github-actions[bot]]

Check the documentation preview: https://6495c0c17184ed4f0f9277b8--niaefeup-backend-docs.netlify.app

[github-actions[bot]]

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