Build(deps): Bump synstructure from 0.12.4 to 0.12.5

Bumps [synstructure](https://github.com/mystor/synstructure) from 0.12.4 to 0.12.5.
- [Release notes](https://github.com/mystor/synstructure/releases)
- [Commits](https://github.com/mystor/synstructure/commits)

---
updated-dependencies:
- dependency-name: synstructure
  dependency-type: indirect
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]