Update CI workflow to upload and download build artifacts using GitHu…

…b Actions

.github/workflows/carbonix_build.yml

@@ -233,20 +233,25 @@ jobs:
           ccache -s
           ccache -z
 
-      - name: Copy build artifacts to shared location
-        run: |
-          mkdir -p $GITHUB_WORKSPACE/shared-output
-          cp -r output/* $GITHUB_WORKSPACE/shared-output
-          ls -la $GITHUB_WORKSPACE/shared-output
+      - name: Upload build artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: build-periph-${{ matrix.config }}
+          path: output/
 
   list-periph-files:
     runs-on: ubuntu-22.04
     needs: build-periph
     steps:
+      - name: Download all build artifacts
+        uses: actions/download-artifact@v3
+        with:
+          path: shared-output/
+
       - name: List files
         run: |
-          ls -la $GITHUB_WORKSPACE/shared-output/
-  
+          ls -la shared-output/
+
   # build-sitl:
   #   runs-on: 'windows-latest'
   #   needs: setup-s3-path