Bump test chart dependencies (#219)

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": "56.0.1"
+    "version": "56.2.1"
   },
   {
     "name": "cert-manager",
@@ -12,7 +12,7 @@
   {
     "name": "ingress-nginx",
     "repo": "https://kubernetes.github.io/ingress-nginx",
-    "version": "4.9.0"
+    "version": "4.9.1"
   },
   {
     "name": "mysql",
@@ -22,6 +22,6 @@
   {
     "name": "postgresql",
     "repo": "https://charts.bitnami.com/bitnami",
-    "version": "13.3.1"
+    "version": "13.4.3"
   }
 ]