chore(ci): Run doc test only on ubuntu (#2149)

Author: tottoto

.github/workflows/CI.yml

@@ -115,6 +115,14 @@ jobs:
     - run: cargo nextest run --workspace --all-features
       env:
         QUICKCHECK_TESTS: 1000  # run a lot of quickcheck iterations
+
+  doc-test:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - uses: hecrj/setup-rust-action@v2
+    - uses: taiki-e/install-action@cargo-hack
+    - uses: Swatinem/rust-cache@v2
     - run: cargo hack --no-private test --doc --all-features
 
   interop: