Bump test chart dependencies (#522)

Signed-off-by: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
Co-authored-by: marcofranssen <[email protected]>

.github/tests/charts.json

@@ -2,7 +2,7 @@
   {
     "name": "kube-prometheus-stack",
     "repo": "https://prometheus-community.github.io/helm-charts",
-    "version": "68.2.1"
+    "version": "68.3.2"
   },
   {
     "name": "cert-manager",

.github/tests/oci-charts.json

@@ -2,16 +2,16 @@
   {
     "name": "mysql",
     "registry": "docker.io/bitnamicharts/mysql",
-    "version": "12.2.1"
+    "version": "12.2.2"
   },
   {
     "name": "postgresql",
     "registry": "docker.io/bitnamicharts/postgresql",
-    "version": "16.4.3"
+    "version": "16.4.5"
   },
   {
     "name": "envoy-gateway",
     "registry": "docker.io/envoyproxy/gateway-helm",
-    "version": "v1.2.5"
+    "version": "v1.2.6"
   }
 ]