Chore: Rollback to jest@26.x

jest.base-config.front.js

@@ -51,7 +51,6 @@ module.exports = {
     '<rootDir>/packages/admin-test-utils/lib/setup/styled-components.js',
     '<rootDir>/packages/admin-test-utils/lib/setup/strapi.js',
   ],
-  testEnvironment: 'jsdom',
   transform: {
     '^.+\\.js$': ['@swc/jest', { jsc: { parser: { jsx: true, dynamicImport: true } } }],
     '\\.(jpg|jpeg|png|gif|eot|otf|webp|svg|ttf|woff|woff2|mp4|webm|wav|mp3|m4a|aac|oga)$':

package.json

@@ -99,10 +99,9 @@
     "glob": "7.2.3",
     "husky": "3.1.0",
     "istanbul": "~0.4.2",
-    "jest": "28.1.3",
-    "jest-circus": "28.1.3",
-    "jest-cli": "28.1.3",
-    "jest-environment-jsdom": "28.1.3",
+    "jest": "26.6.3",
+    "jest-circus": "26.6.3",
+    "jest-cli": "26.6.3",
     "jest-watch-typeahead": "2.0.0",
     "lerna": "5.1.6",
     "lint-staged": "10.5.4",