chore: automerge of digest updates

Author: danez

renovate.json

@@ -25,6 +25,11 @@
       "matchUpdateTypes": ["minor", "patch"],
       "automerge": true
     },
+    {
+      "matchManagers": ["github-actions"],
+      "matchUpdateTypes": ["digest"],
+      "automerge": true
+    },
     {
       "matchDepTypes": ["devDependencies"],
       "matchUpdateTypes": ["minor", "patch"],