Configure Renovate (#1)

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

 * `.gitea/workflows/build.yaml` (github-actions)

### Configuration Summary

Based on the default config's presets, Renovate will:

  - Start dependency updates only once this onboarding PR is merged
  - Enable Renovate Dependency Dashboard creation.
  - Use semantic commit type `fix` for dependencies and `chore` for all others if semantic commits are in use.
  - Ignore `node_modules`, `bower_components`, `vendor` and various test/tests directories.
  - Group known monorepo packages together.
  - Use curated list of recommended non-monorepo package groupings.
  - Apply crowd-sourced package replacement rules.
  - Apply crowd-sourced workarounds for known problems with packages.
  - Preserve (but continue to upgrade) any existing SemVer ranges.
  - Enable Renovate Dependency Dashboard creation.
  - Rebase existing PRs any time the base branch has been updated.
  - Raise PR when vulnerability alerts are detected with label `'security'`.
  - Use curated list of recommended non-monorepo package groupings.
  - Show all Merge Confidence badges for pull requests.

🔡 Do you want to change how Renovate upgrades your dependencies? Add your custom config to `renovate.json` in this branch. Renovate will update the Pull Request description the next time it runs.

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### What to Expect

With your current configuration, Renovate will create 3 Pull Requests:

<details>
<summary>[RENOVATE] Update actions/cache action to v4</summary>

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

</details>

<details>
<summary>[RENOVATE] Update actions/checkout action to v4</summary>

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

</details>

<details>
<summary>[RENOVATE] Update actions/upload-artifact action to v4</summary>

  - Schedule: ["at any time"]
  - Branch name: `renovate/major-github-artifact-actions`
  - Merge into: `main`
  - Upgrade [actions/upload-artifact](https://github.com/actions/upload-artifact) 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:0a0b8841b14278c0c061ba4db2615c8f351f5dda327a6ee5707d6e1ee5980f1c-->

Reviewed-on: #1
Co-authored-by: Renovate <renovate@kjan.de>
Co-committed-by: Renovate <renovate@kjan.de>

renovate.json

@@ -0,0 +1,6 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "local>Renovate/renovate-config"
+  ]
+}