Bump contracts from 0.17.1 to 0.17.2

Bumps [contracts](https://github.com/egonSchiele/contracts.ruby) from 0.17.1 to 0.17.2.
- [Changelog](https://github.com/egonSchiele/contracts.ruby/blob/master/CHANGELOG.markdown)
- [Commits](egonSchiele/contracts.ruby@v0.17.1...v0.17.2)

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

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

Gemfile.lock

@@ -58,7 +58,7 @@ GEM
       fiber-annotation
       fiber-local (~> 1.1)
       json
-    contracts (0.17.1)
+    contracts (0.17.2)
     dotenv (3.1.4)
     em-websocket (0.5.3)
       eventmachine (>= 0.12.9)