Bump megatest from 0.3.0 to 0.4.0

Bumps [megatest](https://github.com/byroot/megatest) from 0.3.0 to 0.4.0.
- [Changelog](https://github.com/byroot/megatest/blob/main/CHANGELOG.md)
- [Commits](byroot/megatest@v0.3.0...v0.4.0)

---
updated-dependencies:
- dependency-name: megatest
  dependency-version: 0.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -18,7 +18,7 @@ GEM
     hiredis (0.6.3-java)
     json (2.7.6)
     json (2.7.6-java)
-    megatest (0.3.0)
+    megatest (0.4.0)
     parallel (1.24.0)
     parser (3.3.0.5)
       ast (~> 2.4.1)