bump go version to 1.17.3

Signed-off-by: Benjamin Wang <wachao@vmware.com>

mvcc/backend/config_default.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build !linux && !windows
 // +build !linux,!windows
 
 package backend

mvcc/backend/config_windows.go

@@ -12,6 +12,7 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:build windows
 // +build windows
 
 package backend