Update license.yaml (#4)

diff --git a/.github/workflows/license.yaml b/.github/workflows/license.yaml
index 9e89543..fac5cb7 100644
--- a/.github/workflows/license.yaml
+++ b/.github/workflows/license.yaml
@@ -38,4 +38,4 @@
     steps:
       - uses: actions/checkout@v2
       - name: Check License Header
-        uses: apache/skywalking-eyes@main
+        uses: apache/skywalking-eyes/header@501a28d2fb4a9b962661987e50cf0219631b32ff