chore: In the GitHub bug template, remove the automatic assignee to QA

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (89e5e00) 62.85% compared to head (9da06e2) 62.85%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #130 +/- ## ======================================= Coverage 62.85% 62.85% ======================================= Files 37 37 Lines 2544 2544 ======================================= Hits 1599 1599 Misses 647 647 Partials 298 298 ``` | Flag | Coverage Δ | | |---|---|---| | unittests | `62.85% <ø> (ø)` | | 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=berty#carryforward-flags-in-the-pull-request-comment) to find out more. Help us with your feedback. Take ten seconds to tell us [how you rate us](https://about.codecov.io/nps?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=berty). Have a feature suggestion? [Share it here.](https://app.codecov.io/gh/feedback/?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=berty)

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[github-actions[bot]]

:tada: This PR is included in version 1.21.0 :tada:

The release is available on GitHub release

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