chore(deps): update dependency @types/jest to v26

package.json

@@ -35,7 +35,7 @@
     "@antfu/eslint-config-ts": "0.2.13",
     "@rollup/plugin-json": "4.1.0",
     "@rollup/plugin-typescript": "4.1.2",
-    "@types/jest": "25.2.3",
+    "@types/jest": "26.0.0",
     "@types/node": "13.13.5",
     "eslint": "7.2.0",
     "eslint-plugin-jest": "23.13.2",