Fix: Inject homelab-ca cert into ArgoCD repo-server

- Mount homelab-ca-secret for TLS verification
- Allows repo-server to reach forgejo.riotpiao.homelab.com
- Fixes x509 certificate verification error

terraform/argocd-bootstrap.tf

@@ -44,6 +44,21 @@ resource "helm_release" "argocd" {
           enabled     = true
           minReplicas = 2
         }
+        volumes = [
+          {
+            name = "homelab-ca"
+            secret = {
+              secretName = "homelab-ca-secret"
+            }
+          }
+        ]
+        volumeMounts = [
+          {
+            name      = "homelab-ca"
+            mountPath = "/etc/ssl/certs/homelab-ca.crt"
+            subPath   = "tls.crt"
+          }
+        ]
       }
       controller = {
         replicas = 2