chore(deps): bump @snapshot-labs/eslint-config-base (#201)

Bumps @snapshot-labs/eslint-config-base from 0.1.0-beta.11 to 0.1.0-beta.15.

---
updated-dependencies:
- dependency-name: "@snapshot-labs/eslint-config-base"
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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