Infrastructure: Bump eslint package from 7.14.0 to 7.15.0 (pull #1662)

Bumps [eslint](https://github.com/eslint/eslint) from 7.14.0 to 7.15.0.
- [Release notes](https://github.com/eslint/eslint/releases)
- [Changelog](https://github.com/eslint/eslint/blob/master/CHANGELOG.md)
- [Commits](eslint/eslint@v7.14.0...v7.15.0)

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

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

Author: dependabot[bot]

package-lock.json

@@ -33,7 +33,7 @@
     "ava": "^3.13.0",
     "cheerio": "^1.0.0-rc.2",
     "cspell": "^4.2.3",
-    "eslint": "^7.14.0",
+    "eslint": "^7.15.0",
     "eslint-config-prettier": "^6.15.0",
     "eslint-plugin-ava": "^11.0.0",
     "eslint-plugin-prettier": "^3.2.0",