Build libavif with -Os and with LTO enabled

Author: fdintino

.github/workflows/wheels-dependencies.sh

@@ -137,8 +137,9 @@ function build_libavif {
             -DCMAKE_INSTALL_PREFIX=$BUILD_PREFIX \
             -DCMAKE_INSTALL_LIBDIR=$BUILD_PREFIX/lib \
             -DCMAKE_INSTALL_NAME_DIR=$BUILD_PREFIX/lib \
+            -DCMAKE_INTERPROCEDURAL_OPTIMIZATION=ON \
             -DCMAKE_MACOSX_RPATH=OFF \
-            -DCMAKE_BUILD_TYPE=Release \
+            -DCMAKE_BUILD_TYPE=MinSizeRel \
             -DBUILD_SHARED_LIBS=ON \
             -DAVIF_LIBSHARPYUV=LOCAL \
             -DAVIF_LIBYUV=LOCAL \