chore(deps): update actions/checkout action to v4

Author: renovate-rancher[bot]

.github/workflows/main.yml

@@ -10,7 +10,7 @@ jobs:
     name: Build
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@f43a0e5ff2bd294095638e18286ca9a3d1956744 # v3
+      - uses: actions/checkout@08eba0b27e820071cde6df949e0beb9ba4906955 # v4
       - name: Make ECM Distro Tools
         run: |
           make all