fix(security): react-scripts packages vulnerabilities

[mdubus]

Pull Request

What does this PR do?

Force the usage of the patched versions of semver and postcss, both used by react-scripts which isn't maintained anymore. This should fix the "moderate" security issues of this repository

PR checklist

Please check if your PR fulfills the following requirements:

• [x] Does this PR fix an existing issue, or have you listed the changes applied in the PR description (and why they are needed)?
• [x] Have you read the contributing guidelines?
• [x] Have you made sure that the title is accurate and descriptive of the changes?

Thank you so much for contributing to Meilisearch!

[meili-bors[bot]]

Build succeeded:

• cypress_meilisearch-api-key
• cypress_meilisearch-no-api-key
• cypress_no_meilisearch
• linter-check