v1.9.0

Features:

• #458 Add PCA template support and e2e tests

Bugfixes:

• #447 Handle conflict errors on CertificateRequest updates
• #459 Update kube-rbac-proxy image to registry.k8s.io

Maintenance:

• #464 Use UUIDs for e2e resource names, disable client-side rate limiting, harden VERSION recipe, and make TestIssuerReconcile hermetic
• #462 Update Go version to 1.26.3 and dependencies to fix vulnerabilities