Update fetch_helm_deps.sh

Signed-off-by: Kjeld Schouten <kjeld@schouten-lebbing.nl>

.github/scripts/fetch_helm_deps.sh

@@ -96,8 +96,10 @@ for idx in $(eval echo "{0..$length}"); do
 
             # tmp hotpatch for cert-manager
             if [[ !  "$dep_url" == "https"* ]]; then
+              if [[ "$name" =~ "cert-manager" ]]; then
                 dep_url="https://charts.jetstack.io/${dep_url}"
               fi
+            fi
 
             echo ""
             echo "⏬ Downloading dependency $name-$version from $dep_url..."