.github/workflows: temporary use actions/setup-go

Since WillAbides/setup-go-faster failed with macOS-latest.

See: WillAbides/setup-go-faster#37

Author: cuonglm

.github/workflows/ci.yml

@@ -8,14 +8,14 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: ["windows-latest", "ubuntu-latest", "macOS-latest"]
+        os: ["windows-latest", "ubuntu-latest", "macOS-15"]
         go: ["1.24.x"]
     runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v3
         with:
           fetch-depth: 1
-      - uses: WillAbides/setup-go-faster@v1.14.0
+      - uses: actions/setup-go@v6
         with:
           go-version: ${{ matrix.go }}
       - run: "go test -race ./..."