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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-DIFF-14917201
- https://snyk.io/vuln/SNYK-JS-BACKSTAGEBACKENDPLUGINAPI-15054291
- https://snyk.io/vuln/SNYK-JS-LODASH-15053838
- https://snyk.io/vuln/SNYK-JS-LODASHES-15053836

Author: snyk-io[bot]

plugins/azure-sites-backend/package.json

@@ -34,10 +34,10 @@
   "dependencies": {
     "@azure/arm-appservice": "^13.0.1",
     "@azure/arm-resourcegraph": "^4.2.1",
-    "@azure/identity": "^3.2.1",
-    "@backstage/backend-common": "workspace:^",
-    "@backstage/config": "workspace:^",
-    "@backstage/plugin-azure-sites-common": "workspace:^",
+    "@azure/identity": "^3.4.1",
+    "@backstage/backend-common": "0.25.0",
+    "@backstage/config": "0.1.1",
+    "@backstage/plugin-azure-sites-common": "0.1.0",
     "@types/express": "^4.17.6",
     "express": "^4.17.1",
     "express-promise-router": "^4.1.0",