ci: update repository metadat before installing package

run `apt-get update` command before running `apt-get install`
to fetch the latest repository metadata

.github/workflows/build-oci.yaml

@@ -16,7 +16,7 @@ jobs:
     - name: Prepare runner
       shell: bash
       run: |
-        sudo apt-get install -y qemu-user-static
+        sudo apt-get update && sudo apt-get install -y qemu-user-static
 
     - name: Checkout code
       uses: actions/checkout@v4