Bump keycloak-connect from 12.0.4 to 15.0.2

Bumps [keycloak-connect](https://github.com/keycloak/keycloak-nodejs-connect) from 12.0.4 to 15.0.2.
- [Release notes](https://github.com/keycloak/keycloak-nodejs-connect/releases)
- [Commits](keycloak/keycloak-nodejs-connect@12.0.4...15.0.2)

---
updated-dependencies:
- dependency-name: keycloak-connect
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -54,7 +54,7 @@
     "got": "^11.8.1",
     "jsonwebtoken": "^8.5.1",
     "jwk-to-pem": "^1.2.6",
-    "keycloak-connect": "^12.0.2",
+    "keycloak-connect": "^15.0.2",
     "lodash": "^4.17.15",
     "pupa": "^2.0.1"
   },