nomacs: fix animated WebP support

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