chore(deps): bump semver and core-js-compat in /docs (dynamodb-toolbox#560)

Bumps [semver](https://github.com/npm/node-semver) and [core-js-compat](https://github.com/zloirock/core-js/tree/HEAD/packages/core-js-compat). These dependencies needed to be updated together.

Updates `semver` from 5.7.2 to 7.5.4
- [Release notes](https://github.com/npm/node-semver/releases)
- [Changelog](https://github.com/npm/node-semver/blob/main/CHANGELOG.md)
- [Commits](npm/node-semver@v5.7.2...v7.5.4)

Updates `core-js-compat` from 3.23.3 to 3.31.1
- [Release notes](https://github.com/zloirock/core-js/releases)
- [Changelog](https://github.com/zloirock/core-js/blob/master/CHANGELOG.md)
- [Commits](https://github.com/zloirock/core-js/commits/v3.31.1/packages/core-js-compat)

---
updated-dependencies:
- dependency-name: semver
  dependency-type: indirect
- dependency-name: core-js-compat
  dependency-type: indirect
...

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Author: dependabot[bot]