Nightly debian and fedora images shouldn't set build-user

[justice-adams-apple]

Currently when we run our nightly Debian/fedora images in GitHub Actions we will see the following error:

node:fs:2368
    return binding.writeFileUtf8(
                   ^

Error: EACCES: permission denied, open '/__w/_temp/_runner_file_commands/save_state_e5a8d9b3-2d5c-42c4-be33-8e81a5c7a889'
    at Object.writeFileSync (node:fs:2368:20)
    at Object.appendFileSync (node:fs:2449:6)
    at Object.issueFileCommand (/__w/_actions/actions/checkout/v4/dist/index.js:3060:8)
    at Object.saveState (/__w/_actions/actions/checkout/v4/dist/index.js:2977:31)
    at 4866 (/__w/_actions/actions/checkout/v4/dist/index.js:2402:10)
    at __nccwpck_require__ (/__w/_actions/actions/checkout/v4/dist/index.js:38210:43)
    at 2565 (/__w/_actions/actions/checkout/v4/dist/index.js:150:34)
    at __nccwpck_require__ (/__w/_actions/actions/checkout/v4/dist/index.js:38210:43)
    at 9210 (/__w/_actions/actions/checkout/v4/dist/index.js:1171:36)
    at __nccwpck_require__ (/__w/_actions/actions/checkout/v4/dist/index.js:38210:43) {
  errno: -13,
  code: 'EACCES',
  syscall: 'open',
  path: '/__w/_temp/_runner_file_commands/save_state_e5a8d9b3-2d5c-42c4-be33-8e81a5c7a889'
}

These images are not directly intended to be used soley by ci.swift.org, they are published, and therefore should not set up a build-user. None of the release images set up the build-user