chore(deps): bump keycloak::devops-stack-module-keycloak

Bumps [keycloak::devops-stack-module-keycloak](https://github.com/camptocamp/devops-stack-module-keycloak) from 3.1.1 to 4.0.0.
- [Release notes](https://github.com/camptocamp/devops-stack-module-keycloak/releases)
- [Changelog](https://github.com/camptocamp/devops-stack-module-keycloak/blob/main/CHANGELOG.md)
- [Commits](camptocamp/devops-stack-module-keycloak@v3.1.1...v4.0.0)

---
updated-dependencies:
- dependency-name: keycloak::github::camptocamp/devops-stack-module-keycloak::v3.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

examples/sks/main.tf

@@ -66,7 +66,7 @@ module "cert-manager" {
 
 # TODO Create an external database as PoC
 module "keycloak" {
-  source = "git::https://github.com/camptocamp/devops-stack-module-keycloak.git?ref=v3.1.1"
+  source = "git::https://github.com/camptocamp/devops-stack-module-keycloak.git?ref=v4.0.0"
 
   cluster_name   = module.sks.cluster_name
   base_domain    = module.sks.base_domain