build(deps): bump keycloak from 26.2.300 to 26.3.202

Bumps [keycloak](https://github.com/kilork/keycloak) from 26.2.300 to 26.3.202.
- [Release notes](https://github.com/kilork/keycloak/releases)
- [Commits](kilork/keycloak@v26.2.300...v26.3.202)

---
updated-dependencies:
- dependency-name: keycloak
  dependency-version: 26.3.202
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -64,5 +64,5 @@ testcontainers = { version = "0.24", features = ["reusable-containers"] }
 oauth2 = { version = "5", default-features = false }
 http = { version = "1", default-features = false }
 # Keep keycloak versions in sync (search for this comment to find all places to update)
-keycloak = "26.2.300"
+keycloak = "26.3.202"
 rand_chacha = { version = "0.3", default-features = false }