chore(deps): update dependency typechain to v5

Author: renovate-bot

package.json

@@ -35,7 +35,7 @@
     "truffle-typings": "^1.0.8",
     "ts-node": "^8.10.2",
     "tslint": "^6.1.2",
-    "typechain": "^1.0.5",
+    "typechain": "^5.0.0",
     "typechain-target-truffle": "^1.0.2",
     "typescript": "^3.9.5"
   },