Bump test chart dependencies (#376)

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": "58.7.2"
+    "version": "59.1.0"
   },
   {
     "name": "cert-manager",
@@ -17,11 +17,11 @@
   {
     "name": "mysql",
     "repo": "https://charts.bitnami.com/bitnami",
-    "version": "11.0.0"
+    "version": "11.1.0"
   },
   {
     "name": "postgresql",
     "repo": "https://charts.bitnami.com/bitnami",
-    "version": "15.4.0"
+    "version": "15.5.1"
   }
 ]