Bump @exercism/babel-preset-javascript from 0.2.1 to 0.5.1

Bumps @exercism/babel-preset-javascript from 0.2.1 to 0.5.1.

---
updated-dependencies:
- dependency-name: "@exercism/babel-preset-javascript"
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]