ci: checkout first so caching works

.github/workflows/build.yml

@@ -14,14 +14,14 @@ jobs:
         go-version: ["1.21.x"]
     runs-on: "ubuntu-latest"
     steps:
+    - uses: actions/checkout@v4
     - name: Install Go
       uses: actions/setup-go@v5
       with:
         go-version: ${{ matrix.go-version }}
     - name: Install Goose
       run: |
         go install github.com/tchajed/goose/cmd/goose@latest
-    - uses: actions/checkout@v4
     - name: Install dependencies
       run: |
         go get -t ./...