ci: dont use buildx anymore

Signed-off-by: Ramon Roche <[email protected]>

Author: mrpollo

.github/workflows/dev_container.yml

@@ -56,7 +56,7 @@ jobs:
             type=raw,enable=true,value=${{ steps.px4_version.outputs.px4_version }},priority=1000
 
   build:
-    name: Build and Push Container
+    name: Build Container (${{ matrix.arch }})
     needs: setup
     strategy:
       matrix:
@@ -91,11 +91,6 @@ jobs:
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-        with:
-          version: v0.20.1
-
       - name: Build and Load Container Image
         uses: docker/build-push-action@v6
         id: docker