build(deps): bump contentful-migration (#3247)

Bumps the production-dependencies group with 1 update: [contentful-migration](https://github.com/contentful/contentful-migration).


Updates `contentful-migration` from 4.31.8 to 4.31.9
- [Release notes](https://github.com/contentful/contentful-migration/releases)
- [Changelog](https://github.com/contentful/contentful-migration/blob/main/CHANGELOG.md)
- [Commits](contentful/contentful-migration@v4.31.8...v4.31.9)

---
updated-dependencies:
- dependency-name: contentful-migration
  dependency-version: 4.31.9
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: production-dependencies
...

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Author: dependabot[bot]