Update apache/skywalking-eyes digest to 6ac3558

Author: oxide-renovate[bot]

.github/workflows/license-check.yml

@@ -9,4 +9,4 @@ jobs:
     steps:
     - uses: actions/checkout@master
     - name: Check License Header
-      uses: apache/skywalking-eyes/header@55373684d1b70e5f8fd9fc8ec114a89ad11a56a3
+      uses: apache/skywalking-eyes/header@6ac35584d6f923b6cb62f1ae8682c5bc60b537e4