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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-AXIOS-15252993

Author: snyk-io[bot]

plugins/auth-backend/package.json

@@ -63,7 +63,7 @@
     "node-fetch": "^2.6.7",
     "openid-client": "^5.2.1",
     "passport": "^0.6.0",
-    "passport-auth0": "^1.4.3",
+    "passport-auth0": "^1.4.4",
     "passport-bitbucket-oauth2": "^0.1.2",
     "passport-github2": "^0.1.12",
     "passport-gitlab2": "^5.0.0",