chore(deps): update actions/checkout action to v6

Author: renovate[bot]

.github/workflows/test.yaml

@@ -14,15 +14,15 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Check out repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Install bpftool
       uses: ./
 
   test-authenticated:
     runs-on: ubuntu-latest
     steps:
     - name: Check out repository
-      uses: actions/checkout@v4
+      uses: actions/checkout@v6
     - name: Install bpftool
       uses: ./
       with: