chore(deps): update bun version to v1.2.18 (#48)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [Bun](https://bun.sh) ([source](https://github.com/oven-sh/bun)) |  | patch | `1.2.17` -> `1.2.18` |
| [oven/bun](https://github.com/oven-sh/bun) | final | patch | `1.2.17` -> `1.2.18` |

---

### Release Notes

<details>
<summary>oven-sh/bun (Bun)</summary>

### [`v1.2.18`](https://github.com/oven-sh/bun/releases/tag/bun-v1.2.18): Bun v1.2.18

[Compare Source](https://github.com/oven-sh/bun/compare/bun-v1.2.17...bun-v1.2.18)

To install Bun v1.2.18

```bash
curl -fsSL https://bun.sh/install | bash

### or you can use npm
### npm install -g bun
```

Windows:

```bash
powershell -c "irm bun.sh/install.ps1|iex"
```

To upgrade to Bun v1.2.18:

```bash
bun upgrade
```

##### [Read Bun v1.2.18's release notes on Bun's blog](https://bun.sh/blog/bun-v1.2.18)

##### Thanks to 14 contributors!

-   [@&#8203;190n](https://github.com/190n)
-   [@&#8203;alii](https://github.com/alii)
-   [@&#8203;cirospaciari](https://github.com/cirospaciari)
-   [@&#8203;dylan-conway](https://github.com/dylan-conway)
-   [@&#8203;ianzone](https://github.com/ianzone)
-   [@&#8203;jarred-sumner](https://github.com/jarred-sumner)
-   [@&#8203;mizulu](https://github.com/mizulu)
-   [@&#8203;nektro](https://github.com/nektro)
-   [@&#8203;pfgithub](https://github.com/pfgithub)
-   [@&#8203;riskymh](https://github.com/riskymh)
-   [@&#8203;sharunkumar](https://github.com/sharunkumar)
-   [@&#8203;ssahillppatell](https://github.com/ssahillppatell)
-   [@&#8203;sunsettechuila](https://github.com/sunsettechuila)
-   [@&#8203;zackradisic](https://github.com/zackradisic)

</details>

---

### Configuration

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---

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---

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Reviewed-on: #48
Reviewed-by: t.behrendt <t.behrendt@noreply.localhost>
Co-authored-by: Renovate Bot <renovate@t00n.de>
Co-committed-by: Renovate Bot <renovate@t00n.de>

.bun-version

@@ -1 +1 @@
-1.2.17
+1.2.18

Dockerfile

@@ -1,4 +1,4 @@
-FROM oven/bun:1.2.17 AS base
+FROM oven/bun:1.2.18 AS base
 
 WORKDIR /app