Use Deno 2.x in CI

Author: lambdalisue

.github/workflows/test.yml

@@ -19,7 +19,7 @@ jobs:
         runner:
           - ubuntu-latest
         deno_version:
-          - "1.x"
+          - "2.x"
     runs-on: ${{ matrix.runner }}
     steps:
       - uses: actions/checkout@v4