workflows: Move actions/checkout before actions/setup-go

By placing actions/checkout before actions/setup-go[1] we could avoid
the following warning message:

Warning: Restore cache failed: Dependencies file is not found in
/home/runner/work/go-ceph/go-ceph. Supported file pattern: go.sum

[1] actions/setup-go#281

Signed-off-by: Anoop C S <anoopcs@cryptolab.net>

.github/workflows/main.yml

@@ -41,10 +41,10 @@ jobs:
     needs: go-versions
     runs-on: ubuntu-latest
     steps:
+    - uses: actions/checkout@v3
     - uses: actions/setup-go@v4
       with:
         go-version: ${{ needs.go-versions.outputs.latest }}
-    - uses: actions/checkout@v3
     - name: Install revive
       run: go install github.com/mgechev/revive@latest
     - name: Run checks