chore: Configure Renovate (#43)

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

🚦 Renovate will begin keeping your dependencies up-to-date only once you
merge or close this Pull Request.



---
### Detected Package Files

 * `.devcontainer/devcontainer.json` (devcontainer)
 * `Dockerfile` (dockerfile)
 * `.github/workflows/flakehub-publish-tagged.yml` (github-actions)
 * `site/package.json` (npm)

### Configuration Summary

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

  - Start dependency updates only once this onboarding PR is merged
  - Hopefully safe environment variables to allow users to configure.
  - Show all Merge Confidence badges for pull requests.
  - 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 (except for nuget) 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.

🔡 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.

---

### What to Expect

With your current configuration, Renovate will create 4 Pull Requests:

<details>
<summary>fix(deps): update dependency astro to v4.16.18
[security]</summary>

  - Branch name: `renovate/npm-astro-vulnerability`
  - Merge into: `main`
- Upgrade [astro](https://redirect.github.com/withastro/astro) to
`4.16.18`


</details>

<details>
<summary>fix(deps): update dependency @&#8203;astrojs/starlight to
^0.30.0</summary>

  - Schedule: ["at any time"]
  - Branch name: `renovate/astrojs-starlight-0.x`
  - Merge into: `main`
- Upgrade
[@astrojs/starlight](https://redirect.github.com/withastro/starlight) to
`^0.30.0`


</details>

<details>
<summary>fix(deps): update dependency sharp to ^0.33.0</summary>

  - Schedule: ["at any time"]
  - Branch name: `renovate/sharp-0.x`
  - Merge into: `main`
- Upgrade [sharp](https://redirect.github.com/lovell/sharp) to `^0.33.0`


</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: `main`
- Upgrade
[actions/checkout](https://redirect.github.com/actions/checkout) 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.


---

❓ 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://redirect.github.com/renovatebot/renovate/discussions).


---

This PR was generated by [Mend Renovate](https://mend.io/renovate/).
View the [repository job
log](https://developer.mend.io/github/ublue-os/blincus).


<!--renovate-config-hash:e80b4e42a3043bc12fa0640db4bac392d2bf770acf841360d7c8ceeeac2ec1a9-->

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

renovate.json

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