Fix matrix way around

Author: joehoyle

.github/workflows/build.yml

@@ -55,13 +55,13 @@ jobs:
           platform: linux/arm64
           php-version: '8.3'
           distro: bookworm
-          builder: ubuntu-latest
+          builder: buildjet-4vcpu-ubuntu-2204-arm
         -
           target: x86_64-unknown-linux-gnu
           platform: linux/amd64
           php-version: '8.3'
           distro: bookworm
-          builder: buildjet-4vcpu-ubuntu-2204-arm
+          builder: ubuntu-latest
     steps:
       - name: Checkout
         uses: actions/checkout@v1