Bump mongodb-runner from 6.7.1 to 6.7.8

Bumps [mongodb-runner](https://github.com/mongodb-js/devtools-shared) from 6.7.1 to 6.7.8.
- [Commits](https://github.com/mongodb-js/devtools-shared/compare/mongodb-runner@6.7.1...mongodb-runner@6.7.8)

---
updated-dependencies:
- dependency-name: mongodb-runner
  dependency-version: 6.7.8
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Author: dependabot[bot]