chore(renovate): enable semantic commit

renovate.json

@@ -3,12 +3,19 @@
     "master"
   ],
   "rebaseWhen": "conflicted",
+  "semanticCommits": "enabled",
   "labels": [
     "Dependencies"
   ],
   "extends": [
-    ":semanticCommits",
     "config:best-practices",
     "github>mihonapp/mihon//.github/renovate.json5"
+  ],
+  "packageRules": [
+    {
+      "groupName": "GitHub Actions",
+      "matchManagers": ["github-actions"],
+      "pinDigests": true
+    }
   ]
 }