tests: fix values for the unsharp test

Set odd size for unsharp matrices, even values are not accepted.

tests/lavfi-regression.sh

@@ -63,7 +63,7 @@ do_lavfi "setsar"             "setsar=16/11"
 do_lavfi "thumbnail"          "thumbnail=10"
 do_lavfi "tile"               "tile=3x3:nb_frames=5:padding=7:margin=2"
 do_lavfi "transpose"          "transpose"
-do_lavfi "unsharp"            "unsharp=10:10:-1.5:10:10:-1.5"
+do_lavfi "unsharp"            "unsharp=11:11:-1.5:11:11:-1.5"
 do_lavfi "vflip"              "vflip"
 do_lavfi "vflip_crop"         "vflip,crop=iw-100:ih-100:100:100"
 do_lavfi "vflip_vflip"        "vflip,vflip"