Use Boost 1.86

libtorrent 1.2 not support 1.87 currently

Author: c0re100

.github/workflows/build_appimage.sh

@@ -270,7 +270,8 @@ prepare_qt() {
 
 preapare_libboost() {
   # build latest boost
-  boost_ver="$(retry curl -ksSfL --compressed https://www.boost.org/users/download/ \| grep "'>Version\s*'" \| sed -r "'s/.*Version\s*([^<]+).*/\1/'" \| head -1)"
+  # boost_ver="$(retry curl -ksSfL --compressed https://www.boost.org/users/download/ \| grep "'>Version\s*'" \| sed -r "'s/.*Version\s*([^<]+).*/\1/'" \| head -1)"
+  boost_ver="1.86.0"
   echo "boost version ${boost_ver}"
   mkdir -p "/usr/src/boost-${boost_ver}"
   if [ ! -f "/usr/src/boost-${boost_ver}/.unpack_ok" ]; then