Bump @ember/test-helpers and @types/ember__test-helpers#706

dependabot[bot] wants to merge 1 commit intomainember-cli/ember-fetch:mainfrom

dependabot/npm_and_yarn/ember/test-helpers-and-types/ember__test-helpers-2.8.1ember-cli/ember-fetch:dependabot/npm_and_yarn/ember/test-helpers-and-types/ember__test-helpers-2.8.1Copy head branch name to clipboard