feat: use github actions

.forgejo/workflows/main.yml

@@ -9,9 +9,12 @@ jobs:
     name: 🧪 Astro check
     runs-on: docker
     container:
-      image: denoland/deno:latest
+      image: node:lts
     steps:
-      - uses: actions/checkout@v4
+      - uses: https://github.com/actions/checkout@v4
+      - uses: https://github.com/denoland/setup-deno@v2
+        with:
+          deno-version: v2.x
       - run: deno task install
       - run: deno task check