feat(deps)!: minimum required jest version is v27

mentioned in commit b5c91c37

mentioned in merge request demo!121 (merged)

mentioned in merge request vscode-html-validate!228 (merged)

mentioned in merge request plugin-utils!2 (merged)

mentioned in merge request demo-app!44 (merged)

mentioned in merge request try-online!135 (merged)

mentioned in merge request html-validate-vue-webpack-plugin!112 (merged)

mentioned in merge request cypress-html-validate!141 (merged)

mentioned in merge request html-validate-jest-snapshot!101 (merged)

mentioned in merge request vue-cli-plugin-html-validate!64 (merged)

mentioned in merge request example-plugin!78 (merged)

mentioned in merge request grunt-html-validate!70 (merged)

mentioned in merge request html-validate-vue!170 (merged)

mentioned in merge request html-validate-angular!122 (merged)

mentioned in merge request protractor-html-validate!93 (merged)