chore(deps): bump cert-manager::devops-stack-module-cert-manager

Bumps [cert-manager::devops-stack-module-cert-manager](https://github.com/camptocamp/devops-stack-module-cert-manager) from 5.2.1 to 6.0.0.
- [Release notes](https://github.com/camptocamp/devops-stack-module-cert-manager/releases)
- [Changelog](https://github.com/camptocamp/devops-stack-module-cert-manager/blob/main/CHANGELOG.md)
- [Commits](camptocamp/devops-stack-module-cert-manager@v5.2.1...v6.0.0)

---
updated-dependencies:
- dependency-name: cert-manager::github::camptocamp/devops-stack-module-cert-manager::v5.2.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

examples/eks/main.tf

@@ -97,7 +97,7 @@ module "traefik" {
 }
 
 module "cert-manager" {
-  source = "git::https://github.com/camptocamp/devops-stack-module-cert-manager.git//eks?ref=v5.2.1"
+  source = "git::https://github.com/camptocamp/devops-stack-module-cert-manager.git//eks?ref=v6.0.0"
 
   cluster_name     = module.eks.cluster_name
   base_domain      = module.eks.base_domain