Update xctestrunner link to fix Bazel test for Xcode 11. (#8171)
Update xctestrunner link to fix Bazel test for Xcode 11. (#8171)

closes https://github.com/material-components/material-components-ios/issues/8004.
material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios,material-components/material-components-ios