Preserve the Entitlements directory in podspec

[digitalmoksha]

In order to code sign Sparkle when installing via a Pod, the Entitlements directory needs to be available.

(Insert summary of your pull request here)

Fixes #2062

Misc Checklist:

• My change requires a documentation update on Sparkle's website repository
• My change requires changes to generate_appcast, generate_keys, or sign_update

Only bug fixes to regressions or security fixes are being backported to the 1.x (master) branch now. If you believe your change is significant enough to backport, please also create a separate pull request against the master branch.

Testing

I tested and verified my change by using one or multiple of these methods:

• Sparkle Test App
• Unit Tests
• My own app
• Other (please specify)

(Describe all the cases that were tested)

macOS version tested: 12.1

[zorgiepoo]

Thanks. This only affects developers that use the Downloader XPC Service and use a manual re-signing workflow (otherwise Xcode's archive/export process preserves the entitlement). Workaround is fetching the entitlements file from the repo or a distribution. (If you do use the Downloader XPC Service please file a bug to Apple about not being able to use WebKit2).

[digitalmoksha]

Thanks @zorgiepoo! Although I don't use the Downloader XPC, it do have a manual signing process. So the simplest thing at the moment is to sign it and just not enable it.

[zorgiepoo]

Ah well, if you don't use it, it doesn't really matter a whole lot how it gets signed because it will be unused. You could technically even remove it if you want.