chore(deps): update dependency mocha to v10

Author: renovate[bot]

package.json

@@ -66,7 +66,7 @@
     "imgur": "^0.2.1",
     "lint-staged": "^13.0.3",
     "memory-fs": "^0.4.1",
-    "mocha": "^4",
+    "mocha": "^10.0.0",
     "mocketeer": "^0.3.0",
     "pixelmatch": "^4.0.2",
     "pngjs": "^3.3.0",