Bump typetag from 0.2.7 to 0.2.8 (#1028)

Bumps [typetag](https://github.com/dtolnay/typetag) from 0.2.7 to 0.2.8.
- [Release notes](https://github.com/dtolnay/typetag/releases)
- [Commits](dtolnay/typetag@0.2.7...0.2.8)

---
updated-dependencies:
- dependency-name: typetag
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]