chore(reloader): manage the reloader release from the repository

Reloader has been running since 23 September and is what makes the
reloader.stakater.com/auto annotation on a pod template do anything, but the
repository only held a namespace. It was a release someone installed by hand,
so it was invisible to review, invisible to Renovate, and one reinstall away from
being silently dropped.

Declaring it in HELM_RELEASES pins the chart version somewhere Renovate can
update it, and the active marker means the namespace is applied before the
upgrade instead of only existing as a side effect of the original install.

The values file sets nothing the running release does not already do, apart from
resource requests and limits, which the chart leaves empty.

renovate/renovate.json

@@ -81,6 +81,15 @@
       "matchStrings": ["(?:^|\\n)KUBECONFORM_VERSION=\"(?<currentValue>[0-9.]+)\""],
       "datasourceTemplate": "github-tags",
       "depNameTemplate": "yannh/kubeconform"
+    },
+    {
+      "customType": "regex",
+      "description": "stakater/reloader chart version pinned in the deploy workflow",
+      "managerFilePatterns": ["^\\.gitea/workflows/deploy-lib\\.sh$"],
+      "matchStrings": ["\\|stakater/reloader\\|reloader\\|(?<currentValue>[0-9.]+)\\|"],
+      "datasourceTemplate": "helm",
+      "depNameTemplate": "reloader",
+      "registryUrlTemplate": "https://stakater.github.io/stakater-charts"
     }
   ],
   "packageRules": [