CI: use toolchain container for label workflow

Use toolchain container for label workflow to skip downloading external
toolchain from openwrt servers.

Fixes: 0fe5776f4a79 ("CI: build: Add support to use container included external toolchain")
Signed-off-by: Christian Marangi <[email protected]>

.github/workflows/label-kernel.yml

@@ -32,6 +32,7 @@ jobs:
       packages: read
     uses: ./.github/workflows/build.yml
     with:
+      container_name: toolchain
       target: ${{ needs.set_target.outputs.target }}
       subtarget: ${{ needs.set_target.outputs.subtarget }}
       build_kernel: true

.github/workflows/label-target.yml

@@ -32,6 +32,7 @@ jobs:
       packages: read
     uses: ./.github/workflows/build.yml
     with:
+      container_name: toolchain
       target: ${{ needs.set_target.outputs.target }}
       subtarget: ${{ needs.set_target.outputs.subtarget }}
       build_full: true