fix: Use rustup default stable for Rust setup in CI

.gitea/workflows/ci.yml

@@ -11,11 +11,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - uses: actions/setup-rust@v1
-        with:
-          rust-version: '1.75'
-          targets: 'wasm32-unknown-unknown'
-      - name: Install dependencies
+      - name: Setup Rust
+        run: |
+          rustup default stable
+      - name: Check compilation
         run: |
           cargo check --all-targets
       - name: Run tests