Bump @keycloak/keycloak-admin-client from 25.0.6 to 26.0.4 in /server

Bumps [@keycloak/keycloak-admin-client](https://github.com/keycloak/keycloak/tree/HEAD/js/libs/keycloak-admin-client) from 25.0.6 to 26.0.4.
- [Release notes](https://github.com/keycloak/keycloak/releases)
- [Commits](https://github.com/keycloak/keycloak/commits/26.0.4/js/libs/keycloak-admin-client)

---
updated-dependencies:
- dependency-name: "@keycloak/keycloak-admin-client"
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

server/package.json

@@ -15,7 +15,7 @@
   },
   "dependencies": {
     "@durhack/durhack-common": "workspace:*",
-    "@keycloak/keycloak-admin-client": "^25.0.5",
+    "@keycloak/keycloak-admin-client": "^26.0.4",
     "@otterhttp/app": "^3.4.7",
     "@otterhttp/cookie-signature": "^3.0.0",
     "@otterhttp/errors": "^0.2.1",