Fix the license check. (#14)

Signed-off-by: Alex Snaps <asnaps@redhat.com>

Author: alexsnaps

.github/workflows/rust.yml

@@ -37,7 +37,7 @@ jobs:
 
     - name: Check licenses
       run: |
-        go get -u github.com/google/addlicense
+        go install github.com/google/addlicense@v1.1.1
         export PATH=$PATH:$(go env GOPATH)/bin
         addlicense -check .