chore: upgrade deno action (#45)

Author: marvinhagemeister

.github/workflows/ci.yml

@@ -11,9 +11,9 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: denoland/setup-deno@v1
+      - uses: denoland/setup-deno@v2
         with:
-          deno-version: canary
+          deno-version: v2.x
       - run: deno fmt --check
       - run: deno lint