Update apache/skywalking-eyes digest to a519404

Author: oxide-renovate[bot]

.github/workflows/license-check.yml

@@ -12,4 +12,4 @@ jobs:
     steps:
     - uses: actions/checkout@master
     - name: Check License Header
-      uses: apache/skywalking-eyes/header@61275cc80d0798a405cb070f7d3a8aaf7cf2c2c1
+      uses: apache/skywalking-eyes/header@a519404d0dfc935365a3ab18257f809af77366dd