update reuse action

.github/workflows/main.yml

@@ -10,7 +10,7 @@ jobs:
     steps:
     - uses: actions/checkout@v2
     - name: REUSE Compliance check
-      uses: fsfe/reuse-action@v0.4
+      uses: fsfe/reuse-action@master
       with:
-        cmd: |
+        cmd: lint
-          --include-submodules lint
+        arg: '--include-submodules'