Bump test chart dependencies

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>

.github/tests/charts.json

@@ -2,12 +2,12 @@
   {
     "name": "kube-prometheus-stack",
     "repo": "https://prometheus-community.github.io/helm-charts",
-    "version": "67.10.0"
+    "version": "68.2.1"
   },
   {
     "name": "cert-manager",
     "repo": "https://charts.jetstack.io",
-    "version": "v1.16.2"
+    "version": "v1.16.3"
   },
   {
     "name": "ingress-nginx",

.github/tests/oci-charts.json

@@ -7,11 +7,11 @@
   {
     "name": "postgresql",
     "registry": "docker.io/bitnamicharts/postgresql",
-    "version": "16.3.5"
+    "version": "16.4.3"
   },
   {
     "name": "envoy-gateway",
     "registry": "docker.io/envoyproxy/gateway-helm",
-    "version": "v1.2.4"
+    "version": "v1.2.5"
   }
 ]