chore: cleanup lint errors

Signed-off-by: blam <ben@blam.sh>

plugins/sonarqube-backend/package.json

@@ -25,6 +25,7 @@
   "dependencies": {
     "@backstage/backend-common": "^0.15.0-next.1",
     "@backstage/config": "^1.0.1",
+    "@backstage/errors": "^1.1.0",
     "@types/express": "*",
     "express": "^4.18.1",
     "express-promise-router": "^4.1.0",
@@ -34,6 +35,7 @@
   },
   "devDependencies": {
     "@backstage/cli": "^0.18.1-next.0",
+    "@backstage/test-utils": "^1.1.3-next.0",
     "@types/supertest": "^2.0.12",
     "msw": "^0.44.2",
     "supertest": "^6.2.4"