Moved @types deps to devDependencies

plugins/auth-backend/package.json

@@ -25,8 +25,6 @@
     "@backstage/catalog-model": "^0.2.0",
     "@backstage/config": "^0.1.1",
     "@types/express": "^4.17.6",
-    "@types/express-session": "^1.17.2",
-    "@types/openid-client": "^3.7.0",
     "compression": "^1.7.4",
     "cookie-parser": "^1.4.5",
     "cors": "^2.8.5",
@@ -60,7 +58,9 @@
     "@backstage/cli": "^0.3.0",
     "@types/body-parser": "^1.19.0",
     "@types/cookie-parser": "^1.4.2",
+    "@types/express-session": "^1.17.2",
     "@types/jwt-decode": "2.2.1",
+    "@types/openid-client": "^3.7.0",
     "@types/passport": "^1.0.3",
     "@types/passport-github2": "^1.2.4",
     "@types/passport-google-oauth20": "^2.0.3",