use ARM64 runners (#169)

https://github.blog/changelog/2025-01-16-linux-arm64-hosted-runners-now-available-for-free-in-public-repositories-public-preview/

Cuts build time from about 20 minutes to less than 5

.github/workflows/build.yml

@@ -15,7 +15,7 @@ on:
 
 jobs:
   build:
-    runs-on: ubuntu-latest
+    runs-on: ubuntu-24.04-arm
     strategy:
       fail-fast: false
       matrix:
@@ -39,9 +39,6 @@ jobs:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
 
-      - name: Setup binfmt-support
-        uses: docker/setup-qemu-action@v2
-
       - name: Setup docker buildx
         uses: docker/setup-buildx-action@v2