🔧 chore(renovate): add uptime-kuma version constraint

- add version constraint for louislam/uptime-kuma package
-  v1.x restrict updates to v1.x versions only, preventing upgrades to v2.x

renovate.json

@@ -127,6 +127,11 @@
       "matchPackageNames": ["linuxserver/**"],
       "allowedVersions": "<2021"
     },
+    {
+      "matchPackageNames": ["louislam/uptime-kuma"],
+      "matchCurrentVersion": "/^v1.*/",
+      "allowedVersions": "<=2"
+    },
     {
       "matchPackageNames": ["photoprism/photoprism"],
       "matchCurrentVersion": "/^\\d{6}$/",