Sparkle binaries are not codesigned during build process

[mbacchi]

The Autoupdate and fileop binaries are not codesigned. This was identified when working on Mac notarization, we see an error during the notarization process:

Traceback (most recent call last):
  File "/Users/jenkins/temp/mbacchi-notarize-test-build/brave-browser-piWaWI/src/out/Release/Brave Browser Nightly Packaging/sign_chrome.py", line 134, in <module>
    main()
  File "/Users/jenkins/temp/mbacchi-notarize-test-build/brave-browser-piWaWI/src/out/Release/Brave Browser Nightly Packaging/sign_chrome.py", line 130, in main
    paths, config, package_dmg=args.dmg, do_notarization=args.notarize)
  File "/Users/jenkins/temp/mbacchi-notarize-test-build/brave-browser-piWaWI/src/out/Release/Brave Browser Nightly Packaging/signing/pipeline.py", line 300, in sign_all
    config):
  File "/Users/jenkins/temp/mbacchi-notarize-test-build/brave-browser-piWaWI/src/out/Release/Brave Browser Nightly Packaging/signing/notarize.py", line 107, in wait_for_results
    'Log file: {}.'.format(uuid, status, info[_LOG_FILE_URL]))
signing.notarize.NotarizationError: Notarization request 952cc91f-5a01-4694-985b-183226293ea2 failed with status: "invalid". Log file: https://osxapps-ssl.itunes.apple.com/itunes-assets/Enigma113/v4/91/85/a6/9185a690-90a6-e6fb-01c1-6b69f0f9b5c6/developer_log.json?accessKey=1564614467_4144878235912366507_U87lE406jGVWbQ4F%2FMafN8yiStByXiI3NU2s5Q6dZ2IUbY9Q0%2F80kkQ0%2BYF56WWJm49pAxzhsofuPINW3Bp9nDyXUyAEaLe7XXIFiQ5x2EFs6s4Kr0DIeRiFujOdEAMzUCjdodYCQWTz%2B451oTT%2FVzczfWJZt6k43%2B73exPLM9Q%3D.
[ERROR] ./../../brave/build/mac/sign_app.sh failed
../../brave/build/mac/sign_app.sh failed with exit code 1
[6/22] ACTION //brave/app/mac:generate_breakpad_symbols(//build/toolchain/mac:clang_x64)
ninja: build stopped: subcommand failed.

The Apple log at that URL above shows:

    {
      "severity": "error",
      "code": null,
      "path": "BraveBrowserNightly-76.0.70.11.zip/Brave Browser Nightly.app/Contents/Frameworks/Brave Browser Nightly Framework.framework/Versions/76.0.70.11/Frameworks/Sparkle.framework/Versions/A/Resources/Autoupdate.app/Contents/MacOS/fileop",
      "message": "The binary is not signed.",
      "docUrl": null,
      "architecture": "x86_64"
    },
...
    {
      "severity": "error",
      "code": null,
      "path": "BraveBrowserNightly-76.0.70.11.zip/Brave Browser Nightly.app/Contents/Frameworks/Brave Browser Nightly Framework.framework/Versions/76.0.70.11/Frameworks/Sparkle.framework/Versions/A/Resources/Autoupdate.app/Contents/MacOS/Autoupdate",
      "message": "The binary is not signed.",
      "docUrl": null,
      "architecture": "x86_64"
    },

[mbacchi]

Fixed in brave/brave-browser#6572