Action: Upload arm64 artifacts too (#423)

The action used to compile the arm64 kernel then clean the output folder then build the armhf kernel only which later gets uploaded since it is the only output.

Now it builds both variants and uploads the output of both.

Author: HeyMeco

.github/workflows/compile.yaml

@@ -50,7 +50,6 @@ jobs:
         id: kernel-armhf
         run: |
 
-          rm -rf output/debs/*
           mkdir -p userpatches/extensions/
           cat <<- EOF > userpatches/extensions/pull-request.sh
           function post_family_config__force_commit_for_rk3588() {