Bump ejs and react-scripts in /03-site-estatico/website (#121)

Bumps [ejs](https://github.com/mde/ejs) and [react-scripts](https://github.com/facebook/create-react-app/tree/HEAD/packages/react-scripts). These dependencies needed to be updated together. Updates `ejs` from 2.7.4 to 3.1.8 - [Release notes](https://github.com/mde/ejs/releases) - [Changelog](https://github.com/mde/ejs/blob/main/CHANGELOG.md) - [Commits](mde/ejs@v2.7.4...v3.1.8) Updates `react-scripts` from 4.0.3 to 5.0.1 - [Release notes](https://github.com/facebook/create-react-app/releases) - [Changelog](https://github.com/facebook/create-react-app/blob/main/CHANGELOG-4.x.md) - [Commits](https://github.com/facebook/create-react-app/commits/react-scripts@5.0.1/packages/react-scripts) --- updated-dependencies: - dependency-name: ejs dependency-type: indirect - dependency-name: react-scripts dependency-type: direct:production ... Signed-off-by: dependabot[bot] <support@github.com> Signed-off-by: dependabot[bot] <support@github.com> Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]