get rid of majority of peer dependency warnings in yarn

Signed-off-by: Fredrik Adelöw <freben@gmail.com>

plugins/auth-backend/package.json

@@ -78,7 +78,6 @@
   "devDependencies": {
     "@backstage/backend-test-utils": "workspace:^",
     "@backstage/cli": "workspace:^",
-    "@backstage/test-utils": "workspace:^",
     "@types/body-parser": "^1.19.0",
     "@types/cookie-parser": "^1.4.2",
     "@types/express-session": "^1.17.2",

plugins/auth-backend/src/providers/bitbucketServer/provider.test.ts

@@ -23,7 +23,7 @@ import {
   BitbucketServerOAuthResult,
 } from './provider';
 import { setupServer } from 'msw/node';
-import { setupRequestMockHandlers } from '@backstage/test-utils';
+import { setupRequestMockHandlers } from '@backstage/backend-test-utils';
 import { rest } from 'msw';
 
 jest.mock('../../lib/passport/PassportStrategyHelper', () => {