Bump version to 6.0.0-beta.3

[xavierbriole[bot]]

Automated changes by create-pull-request GitHub action

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Name	Status	Preview	Comments	Updated (UTC)
react-cookienotice	✅ Ready (Inspect)	Visit Preview	💬 Add feedback	Apr 22, 2023 1:31pm

[codecov[bot]]

Codecov Report

Patch and project coverage have no change.

Comparison is base (b7ca237) 100.00% compared to head (77d429b) 100.00%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #164 +/- ## ========================================= Coverage 100.00% 100.00% ========================================= Files 9 9 Lines 339 339 Branches 61 61 ========================================= Hits 339 339 ``` 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=Xavier+Briole). 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=Xavier+Briole)

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