chore(deps): update dependency c8 to v8 (#474)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

package-lock.json

@@ -24,7 +24,7 @@
   },
   "devDependencies": {
     "ava": "5.3.0",
-    "c8": "7.14.0",
+    "c8": "8.0.0",
     "conventional-changelog-atom": "3.0.0",
     "conventional-changelog-conventionalcommits": "6.0.0",
     "conventional-changelog-ember": "3.0.0",