set TARGET in build workflow to amd64

.github/workflows/build.yaml

@@ -20,7 +20,7 @@ jobs:
           sudo apt-get update && sudo apt-get install -y clang llvm libbpf-dev
       - name: make generate
         run: |
-          make generate
+          TARGET=amd64 make generate
       - name: verify output
         run: |
           git diff --exit-code || (echo 'generated diff, please run "make generate"' && exit 1)