fix: plugins/playlist-backend/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-AJV-15274295
- https://snyk.io/vuln/SNYK-JS-QS-15268416

Author: snyk-bot

plugins/playlist-backend/package.json

@@ -22,17 +22,17 @@
     "postpack": "backstage-cli package postpack"
   },
   "dependencies": {
-    "@backstage/backend-common": "workspace:^",
-    "@backstage/catalog-client": "workspace:^",
-    "@backstage/catalog-model": "workspace:^",
-    "@backstage/config": "workspace:^",
+    "@backstage/backend-common": "0.24.1",
+    "@backstage/catalog-client": "0.2.0",
+    "@backstage/catalog-model": "0.1.1",
+    "@backstage/config": "0.1.1",
     "@backstage/errors": "workspace:^",
-    "@backstage/plugin-auth-node": "workspace:^",
+    "@backstage/plugin-auth-node": "0.1.0",
     "@backstage/plugin-permission-common": "workspace:^",
-    "@backstage/plugin-permission-node": "workspace:^",
+    "@backstage/plugin-permission-node": "0.1.0",
     "@backstage/plugin-playlist-common": "workspace:^",
     "@types/express": "*",
-    "express": "^4.17.1",
+    "express": "^4.22.0",
     "express-promise-router": "^4.1.0",
     "knex": "^2.0.0",
     "node-fetch": "^2.6.7",