ci: run aarch64 builds on arm runner (#176)

* ci: run aarch64 builds on arm runner

* chore: rename variable

Author: viceice

.github/workflows/build.yml

@@ -43,18 +43,21 @@ jobs:
   build:
     needs:
       - lint
-    runs-on: ubuntu-latest
+    runs-on: ${{ matrix.arch.os }}
+    name: build (${{ matrix.arch.name }})
 
     strategy:
       fail-fast: false
       matrix:
         arch:
-          - x86_64
-          - aarch64
+          - name: x86_64
+            os: ubuntu-24.04
+          - name: aarch64
+            os: ubuntu-24.04-arm
 
     env:
       # DISTRO: ${{ matrix.distro }} # build target, name required by binary-builder
-      ARCH: ${{ matrix.arch }} # build target, name required by binary-builder
+      ARCH: ${{ matrix.arch.name }} # build target, name required by binary-builder
 
     steps:
       - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2