chore(deps): update dependency @types/chai to v4.2.19

Author: renovate-bot

package.json

@@ -68,7 +68,7 @@
     "0x": "4.10.2",
     "@semantic-release/changelog": "5.0.1",
     "@semantic-release/git": "9.0.0",
-    "@types/chai": "4.2.18",
+    "@types/chai": "4.2.19",
     "@types/cross-spawn": "6.0.2",
     "@types/eslint": "7.2.13",
     "@types/eslint-plugin-prettier": "3.1.0",