Bump built from 0.7.7 to 0.8.0 in /deepwell

Bumps [built](https://github.com/lukaslueg/built) from 0.7.7 to 0.8.0.
- [Changelog](https://github.com/lukaslueg/built/blob/master/CHANGELOG.md)
- [Commits](lukaslueg/built@0.7.7...0.8.0)

---
updated-dependencies:
- dependency-name: built
  dependency-version: 0.8.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

deepwell/Cargo.lock

@@ -76,7 +76,7 @@ maplit = "1"
 pretty_assertions = "1"
 
 [build-dependencies]
-built = { version = "0.7", features = ["git2"] }
+built = { version = "0.8", features = ["git2"] }
 
 # Warnings and Errors