nomacs: fix animated WebP support

+2
+2
pkgs/applications/graphics/nomacs/default.nix
··· 8 8 , qtbase 9 9 , qttools 10 10 , qtsvg 11 + , qtimageformats 11 12 12 13 , exiv2 13 14 , opencv4 ··· 46 47 buildInputs = [qtbase 47 48 qttools 48 49 qtsvg 50 + qtimageformats 49 51 exiv2 50 52 opencv4 51 53 libraw