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

Author: renovate[bot]

package.json

@@ -30,7 +30,7 @@
   "devDependencies": {
     "@changesets/changelog-github": "^0.5.1",
     "@changesets/cli": "^2.29.6",
-    "@types/jest": "^25.1.2",
+    "@types/jest": "^26.0.24",
     "@types/object-hash": "^1.3.1",
     "object-hash": "^2.0.2",
     "tsdx": "^0.12.3",