chore(deps): bump @snapshot-labs/eslint-config-base (#762)

Bumps @snapshot-labs/eslint-config-base from 0.1.0-beta.13 to 0.1.0-beta.15.

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>