Update jest monorepo to v26

Author: renovate-bot

package.json

@@ -66,7 +66,7 @@
     "@testing-library/react": "^11.2.2",
     "babel-core": "^7.0.0-bridge.0",
     "babel-eslint": "^10.1.0",
-    "babel-jest": "^25.1.0",
+    "babel-jest": "^26.0.0",
     "babel-loader": "^8.0.6",
     "babel-plugin-styled-components": "^1.10.7",
     "concurrently": "^5.1.0",
@@ -84,7 +84,7 @@
     "fs-extra": "^8.1.0",
     "glob": "^7.1.6",
     "identity-obj-proxy": "^3.0.0",
-    "jest": "^25.1.0",
+    "jest": "^26.0.0",
     "mkdirp": "^1.0.3",
     "node-sass": "^4.13.1",
     "path": "^0.12.7",