chore(deps): update node.js to v21.6.0 (#27)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [node](https://github.com/nodejs/node) | docker | minor | `21.4.0-slim` -> `21.6.0-slim` |
| [node](https://github.com/nodejs/node) | final | minor | `21.4.0-slim` -> `21.6.0-slim` |

---

This PR has been generated by [Renovate Bot](https://github.com/renovatebot/renovate).
<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNS4xMTcuMyIsInVwZGF0ZWRJblZlciI6IjM1LjExNy4zIiwidGFyZ2V0QnJhbmNoIjoibWFpbiJ9-->

Co-authored-by: Joao P Dubas <joao.dubas+gitea@gmail.com>
Reviewed-on: #27
Co-authored-by: renovate-bot <renovate-bot@dubas.dev>
Co-committed-by: renovate-bot <renovate-bot@dubas.dev>

.drone.yml

@@ -27,7 +27,7 @@ steps:
       restore: true
 
   - name: test
-    image: 'node:21.4.0-slim'
+    image: 'node:21.6.0-slim'
     commands:
       - yarn set version 4.0.2
       - yarn install

.tool-versions

@@ -1,2 +1,2 @@
-nodejs 21.1.0
+nodejs 21.6.0
 yarn 1.22.19

Dockerfile

@@ -1,4 +1,4 @@
-FROM node:21.4.0-slim
+FROM node:21.6.0-slim
 
 WORKDIR /opt/app