ci: Bump checkout action to latest version

Bump checkout action to latest version v3

Signed-off-by: Andreas Deininger <[email protected]>

Author: deining

.github/workflows/license_check.yml

@@ -8,7 +8,7 @@ jobs:
     name: Scan code for licenses
     steps:
     - name: Checkout the code
-      uses: actions/checkout@v1
+      uses: actions/checkout@v3
     - name: Scan the code
       id: scancode
       uses: zephyrproject-rtos/action_scancode@v4