switch to using arm64 runners on arm64 build

Author: msukkari

.github/workflows/staging-ghcr-public.yml

@@ -10,16 +10,19 @@ env:
 
 jobs:
   build:
-    runs-on: macos-13
+    runs-on: ${{ matrix.runs-on}}
     permissions:
       contents: read
       packages: write
       id-token: write
     strategy:
       matrix:
-        platform:
-          - linux/amd64
-          - linux/arm64
+        platform: [linux/amd64, linux/arm64]
+        include:
+          - platform: linux/amd64
+            runs-on: ubuntu-latest
+          - platform: linux/arm64
+            runs-on: ubuntu-24.04-arm
 
     steps:
       - name: Prepare