composer(deps-dev): bump myclabs/deep-copy from 1.12.1 to 1.13.0 (#1770)

Bumps [myclabs/deep-copy](https://github.com/myclabs/DeepCopy) from 1.12.1 to 1.13.0.
- [Release notes](https://github.com/myclabs/DeepCopy/releases)
- [Commits](myclabs/DeepCopy@1.12.1...1.13.0)

---
updated-dependencies:
- dependency-name: myclabs/deep-copy
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>