Bump test chart dependencies (#358)

Co-authored-by: marcofranssen <[email protected]>
Co-authored-by: Faisal Memon <[email protected]>

.github/tests/charts.json

@@ -2,12 +2,12 @@
   {
     "name": "kube-prometheus-stack",
     "repo": "https://prometheus-community.github.io/helm-charts",
-    "version": "46.6.0"
+    "version": "46.8.0"
   },
   {
     "name": "cert-manager",
     "repo": "https://charts.jetstack.io",
-    "version": "v1.12.1"
+    "version": "v1.12.2"
   },
   {
     "name": "ingress-nginx",
@@ -17,11 +17,11 @@
   {
     "name": "mysql",
     "repo": "https://charts.bitnami.com/bitnami",
-    "version": "9.10.1"
+    "version": "9.10.4"
   },
   {
     "name": "postgresql",
     "repo": "https://charts.bitnami.com/bitnami",
-    "version": "12.5.6"
+    "version": "12.5.7"
   }
 ]