Upgrade AGP to 8.13.2 to support Kotlin 2.3

[dfabulich]

https://developer.android.com/build/kotlin-support says that Kotlin 2.3 requires AGP 8.13.2 or later.

Fixes skiptools/skip#658

Skip Pull Request Checklist:

• REQUIRED: I have signed the Contributor Agreement
• REQUIRED: I have tested my change locally with swift test
• OPTIONAL: I have tested my change on an iOS simulator or device
• OPTIONAL: I have tested my change on an Android emulator or device

---

• AI was used to generate or assist with generating this PR. Please specify below how you used AI to help you, and what steps you have taken to manually verify the changes.

Cursor tracked this down for me. The only testing I did was to confirm that skiptools/skip#658 is fixed with it. (It's not at all clear to me how best to regression test AGP upgrades!)

[marcprux]

(It's not at all clear to me how best to regression test AGP upgrades!)

You can just add a specific branch in your dependencies in the app's Package.swift:

    dependencies: [
        .package(url: "https://source.skip.tools/skip.git", from: "1.8.4"),
        .package(url: "https://source.skip.tools/skip-unit.git", branch: "agp-bump"),
        .package(url: "https://source.skip.tools/skip-ui.git", from: "1.0.0"),
        .package(url: "https://source.skip.tools/skip-foundation.git", from: "1.0.0"),
        .package(url: "https://source.skip.tools/skip-model.git", from: "1.0.0")
    ],

You don't actually need to reference the skip-unit dependency, but the explicit branch specification will override the transitive dependency from skip-lib (via skip-foundation).

[marcprux]

Thanks for the fix. I'll close this in favor of #17, which has a little bit more doc and discussion.

[marcprux]

(It's not at all clear to me how best to regression test AGP upgrades!)

You can just add a specific branch in your dependencies in the app's Package.swift:

nvm the last response, I see that wasn't the question you were asking.

There isn't any good way that I know of to test new AGP versions, short of exercising it by building a bunch of apps (which we do in the schedule workflows in the various skipapp- packages).