Pin dependencies

Author: oxide-renovate[bot]

.github/workflows/license-check.yml

@@ -7,6 +7,6 @@ jobs:
   license:
     runs-on: ubuntu-24.04
     steps:
-    - uses: actions/checkout@master
+    - uses: actions/checkout@61b9e3751b92087fd0b06925ba6dd6314e06f089 # master
     - name: Check License Header
       uses: apache/skywalking-eyes/header@55373684d1b70e5f8fd9fc8ec114a89ad11a56a3

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
         with:
           toolchain: stable
 
-      - uses: michaelkaye/setup-matrix-synapse@main
+      - uses: michaelkaye/setup-matrix-synapse@e080023c56271cab986b83db75edba570fafb88b # main
         with:
           uploadLogs: true
           httpPort: 8008