(FACT-3442) Update os.architecture fact for debian to arm64

[shubhamshinde360]

No description provided.

[joshcooper]

Change looks good. We'll need the same change applied to Ubuntu too, as they follow arm64 convention for packages, for example libc https://packages.ubuntu.com/jammy/libc6

[joshcooper]

I modified the test for Ubuntu and ran beaker tests:

$  bx rake ci:test:setup SHA=2793d324ee8ff297a717ef8a508181b0f0c87a91 HOSTS=ubuntu2204-AARCH64a
$  bx beaker exec tests/facts/os_processors_and_kernel.rb
...
        "os": {
          "architecture": "arm64",
          "distro": {
            "codename": "jammy",
            "description": "Ubuntu 22.04.2 LTS",
            "id": "Ubuntu",
            "release": {
              "full": "22.04",
              "major": "22.04"
            }
          },
          "family": "Debian",
          "hardware": "aarch64",
          "name": "Ubuntu",
          "release": {
            "full": "22.04",
            "major": "22.04"
          },
          "selinux": {
            "enabled": false
          }
        },
...
tests/facts/os_processors_and_kernel.rb passed in 3.83 seconds