chore: Configure Renovate (#16)

Welcome to [Renovate](https://github.com/renovatebot/renovate)! This is an onboarding PR to help you understand and configure settings before regular Pull Requests begin.

🚦 To activate Renovate, merge this Pull Request. To disable Renovate, simply close this Pull Request unmerged.

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### Detected Package Files

 * `.github/workflows/build.yaml` (github-actions)
 * `.github/workflows/release.yaml` (github-actions)
 * `gradle.properties` (gradle)
 * `settings.gradle.kts` (gradle)
 * `build.gradle.kts` (gradle)
 * `composeApp/build.gradle.kts` (gradle)
 * `gradle/libs.versions.toml` (gradle)
 * `gradle/wrapper/gradle-wrapper.properties` (gradle-wrapper)

### What to Expect

With your current configuration, Renovate will create 6 Pull Requests:

<details>
<summary>chore(deps): update dependency org.jetbrains.compose to v1.7.3</summary>

  - Schedule: ["at any time"]
  - Branch name: `renovate/compose.multiplatform`
  - Merge into: `master`
  - Upgrade [org.jetbrains.compose](https://github.com/JetBrains/compose-jb) to `1.7.3`

</details>

<details>
<summary>chore(deps): update agp to v8.8.0</summary>

  - Schedule: ["at any time"]
  - Branch name: `renovate/agp`
  - Merge into: `master`
  - Upgrade [com.android.library](https://android.googlesource.com/platform/tools/base) to `8.8.0`
  - Upgrade [com.android.application](https://android.googlesource.com/platform/tools/base) to `8.8.0`

</details>

<details>
<summary>chore(deps): update dependency androidx.activity:activity-compose to v1.10.0</summary>

  - Schedule: ["at any time"]
  - Branch name: `renovate/androidx.activitycompose`
  - Merge into: `master`
  - Upgrade [androidx.activity:activity-compose](https://cs.android.com/androidx/platform/frameworks/support) to `1.10.0`

</details>

<details>
<summary>chore(deps): update dependency gradle to v8.12</summary>

  - Schedule: ["at any time"]
  - Branch name: `renovate/gradle-8.x`
  - Merge into: `master`
  - Upgrade [gradle](https://github.com/gradle/gradle) to `8.12`

</details>

<details>
<summary>chore(deps): update actions/checkout action to v4</summary>

  - Schedule: ["at any time"]
  - Branch name: `renovate/actions-checkout-4.x`
  - Merge into: `master`
  - Upgrade [actions/checkout](https://github.com/actions/checkout) to `v4`

</details>

<details>
<summary>chore(deps): update actions/setup-java action to v4</summary>

  - Schedule: ["at any time"]
  - Branch name: `renovate/actions-setup-java-4.x`
  - Merge into: `master`
  - Upgrade [actions/setup-java](https://github.com/actions/setup-java) to `v4`

</details>

🚸 Branch creation will be limited to maximum 2 per hour, so it doesn't swamp any CI resources or overwhelm the project. See docs for `prhourlylimit` for details.

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❓ Got questions? Check out Renovate's [Docs](https://docs.renovatebot.com/), particularly the Getting Started section.
If you need any further assistance then you can also [request help here](https://github.com/renovatebot/renovate/discussions).

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This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).

<!--renovate-config-hash:94693a990c975907e7f13da3309b9d56ba02b3983519b41786edf5cf031e457c-->

Reviewed-on: #16
Co-authored-by: Renovate Bot <renovate@brmartin.co.uk>
Co-committed-by: Renovate Bot <renovate@brmartin.co.uk>

renovate.json

@@ -0,0 +1,3 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json"
+}