updated ebiten version from 2.7.9 to 2.9.9

vendor/github.com/hajimehoshi/ebiten/v2/internal/gamepaddb/gamepaddb.go

@@ -12,6 +12,9 @@
 // See the License for the specific language governing permissions and
 // limitations under the License.
 
+//go:generate go run gen.go
+//go:generate gofmt -s -w .
+
 package gamepaddb
 
 import (
@@ -37,35 +40,20 @@ const (
 )
 
 func currentPlatform() platform {
-	if runtime.GOOS == "windows" {
+	switch runtime.GOOS {
+	case "windows":
 		return platformWindows
-	}
-
-	if runtime.GOOS == "aix" ||
-		runtime.GOOS == "dragonfly" ||
-		runtime.GOOS == "freebsd" ||
-		runtime.GOOS == "hurd" ||
-		runtime.GOOS == "illumos" ||
-		runtime.GOOS == "linux" ||
-		runtime.GOOS == "netbsd" ||
-		runtime.GOOS == "openbsd" ||
-		runtime.GOOS == "solaris" {
+	case "aix", "dragonfly", "freebsd", "hurd", "illumos", "linux", "netbsd", "openbsd", "solaris":
 		return platformUnix
-	}
-
-	if runtime.GOOS == "android" {
+	case "android":
 		return platformAndroid
-	}
-
-	if runtime.GOOS == "ios" {
+	case "ios":
 		return platformIOS
-	}
-
-	if runtime.GOOS == "darwin" {
+	case "darwin":
 		return platformMacOS
+	default:
+		return platformUnknown
 	}
-
-	return platformUnknown
 }
 
 type mappingType int