Upgrade Gradle version, or find other solution for `tumblr-metal` failing to download Gradle

As part of building the app in CI, we run `./gradlew`.

Since moving to `tumblr-metal` as part of the ReleaseV2 and release-in-CI migration, see paaHJt-6ps-p2, running `./gradlew` fails with

```
Downloading https://services.gradle.org/distributions/gradle-8.2-bin.zip

Exception in thread "main" java.io.IOException: Downloading from https://services.gradle.org/distributions/gradle-8.2-bin.zip failed: timeout
```

[Example](https://buildkite.com/automattic/simplenote-android/builds/418#0192b2f6-f5cc-4d8f-9e02-9dda8c3a9b69):

We discussed, p1726719736370609-slack-C020Q0Z579V, a few options to solve this issue. The most promising being:

- Upgrading Gradle in Simplenote Android to a version that `tumblr-metal` supports. _This seems like the best option as presumably `tumblr-metal` support recent versions which would be beneficial to adopt regardless of CI limitations._
- Pass a proxy config to Gradle

In the meantime, https://github.com/Automattic/simplenote-android/pull/1705 has a workaround.

Start with ./gradlew and the project configuration that selects Gradle 8.2, then review tumblr-metal's supported Gradle versions and the CI failure example. Compare the upgrade and proxy options, including the workaround in pull request #1705. Done means the Android CI build runs ./gradlew without timing out while downloading Gradle.

Written by the indexing model from the issue text.