🔧 chore(renovate): update calibre-web package rule

- add `ignoreUnstable` property set to `false` for linuxserver/calibre-web package rule
- add `versionCompatibility` property

renovate.json

@@ -137,7 +137,10 @@
     {
       "matchPackageNames": ["linuxserver/calibre-web"],
       "matchCurrentVersion": "<=5",
-      "allowedVersions": "<5"
+      "allowedVersions": "<5",
+      "ignoreUnstable": false,
+      "versionCompatibility": "^(?<major>\\d+)\\.(?<minor>\\d+)\\.(?<patch>\\d+)-ls(?<build>\\d+)$",
+      "versioning": "semver"
     },
     {
       "matchPackageNames": ["linuxserver/qbittorrent"],