ci: add INSECURE_IGNORE_HOST_KEY env var for integration tests

Author: glebtv

.github/workflows/ci.yml

@@ -56,6 +56,8 @@ jobs:
           go test -v ./authorized_keys/...
 
       - name: Run integration tests
+        env:
+          INSECURE_IGNORE_HOST_KEY: YES
         run: go test -v -timeout 5m -run . ./...
 
       - name: Stop test SSH server