small fixes for version support

[codecov[bot]]

Codecov Report

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

Project coverage is 94.64%. Comparing base (7ea8253) to head (7fcdd81). Report is 1 commits behind head on master.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #209 +/- ## ========================================== + Coverage 94.63% 94.64% +0.01% ========================================== Files 10 10 Lines 1547 1550 +3 ========================================== + Hits 1464 1467 +3 Misses 83 83 ``` | [Flag](https://app.codecov.io/gh/manulera/ShareYourCloning_backend/pull/209/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Manuel+Lera-Ramirez) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/manulera/ShareYourCloning_backend/pull/209/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Manuel+Lera-Ramirez) | `94.64% <100.00%> (+0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Manuel+Lera-Ramirez#carryforward-flags-in-the-pull-request-comment) to find out more.

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