chore(deps): update dependency @sindresorhus/tsconfig to v0.9.0

Author: renovate-bot

package.json

@@ -40,7 +40,7 @@
   },
   "devDependencies": {
     "@arkecosystem/core-utils": "2.7.1",
-    "@sindresorhus/tsconfig": "0.7.0",
+    "@sindresorhus/tsconfig": "0.9.0",
     "@types/jest": "26.0.14",
     "@types/node": "12.12.62",
     "tslint": "6.1.3",