chore(deps): update docker.io/volkerraschek/helm docker tag to v3.16.4

renovate.json

@@ -17,13 +17,15 @@
     },
     {
       "description": "Detect helm chart version in README",
-      "fileMatch": ["^README\\.md$"],
+      "fileMatch": [
+        "^README\\.md$"
+      ],
       "matchStrings": [
         "^CHART_VERSION=(?<currentValue>.*)$"
       ],
       "datasourceTemplate": "git-tags",
       "depNameTemplate": "volker.raschek/prometheus-postgres-exporter",
-      "packageNameTemplate": "https://git.cryptic.systems/volker.raschek/prometheus-postgres-exporter",
+      "packageNameTemplate": "git.cryptic.systems/volker.raschek/prometheus-postgres-exporter",
       "versioningTemplate": "semver"
     }
   ],
@@ -44,7 +46,6 @@
     },
     {
       "addLabels": [ "renovate/automerge", "renovate/documentation" ],
-      "automerge": true,
       "matchDepNames": [
         "volker.raschek/prometheus-postgres-exporter"
       ],