build(deps): bump keycloak from 26.2.3 to 26.2.4

Bumps `keycloak` from 26.2.3 to 26.2.4.

Updates `org.keycloak:keycloak-core` from 26.2.3 to 26.2.4
- [Release notes](https://github.com/keycloak/keycloak/releases)
- [Commits](keycloak/keycloak@26.2.3...26.2.4)

Updates `org.keycloak:keycloak-server-spi` from 26.2.3 to 26.2.4
- [Release notes](https://github.com/keycloak/keycloak/releases)
- [Commits](keycloak/keycloak@26.2.3...26.2.4)

Updates `org.keycloak:keycloak-server-spi-private` from 26.2.3 to 26.2.4
- [Release notes](https://github.com/keycloak/keycloak/releases)
- [Commits](keycloak/keycloak@26.2.3...26.2.4)

---
updated-dependencies:
- dependency-name: org.keycloak:keycloak-core
  dependency-version: 26.2.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.keycloak:keycloak-server-spi
  dependency-version: 26.2.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
- dependency-name: org.keycloak:keycloak-server-spi-private
  dependency-version: 26.2.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

gradle/libs.versions.toml

@@ -1,5 +1,5 @@
 [versions]
-keycloak="26.2.3"
+keycloak="26.2.4"
 
 [libraries]
 keycloak-core = { group = "org.keycloak", name = "keycloak-core", version.ref = "keycloak" }