feat: update fish to 3.2.0

[etcusrvar]

Motivation: Update fish to 3.2.0

Also, build with ncursesw instead of ncurses.

Checklist

• Build rule all-supported completed successfully
• Package upgrade completed successfully
• New installation of package completed successfully

[publicarray]

For dsm7 and future me:
armv7/aarch64:

  -- Looking for cbreak in /github/workspace/spk/fish/work-armv7-7.0/install/var/packages/fish/target/lib/libncursesw.so
  -- Looking for cbreak in /github/workspace/spk/fish/work-armv7-7.0/install/var/packages/fish/target/lib/libncursesw.so - not found
  -- Found Curses: /github/workspace/spk/fish/work-armv7-7.0/install/var/packages/fish/target/lib/libncursesw.so  
  -- Looking for pthread.h
  -- Looking for pthread.h - not found
  CMake Error at /usr/share/cmake-3.13/Modules/FindPackageHandleStandardArgs.cmake:137 (message):
    Could NOT find Threads (missing: Threads_FOUND)

x64:

  [ 20%] Building CXX object CMakeFiles/fishlib.dir/src/builtin_math.cpp.o
  In file included from /github/workspace/toolchain/syno-x64-7.0/work/x86_64-pc-linux-gnu/x86_64-pc-linux-gnu/include/c++/7.3.0/cmath:45:0,
                   from /github/workspace/spk/fish/work-x64-7.0/fish-3.2.0/src/builtin_math.cpp:8:
  /github/workspace/spk/fish/work-x64-7.0/fish-3.2.0/src/builtin_math.cpp: In function ‘int evaluate_expression(const wchar_t*, const parser_t&, io_streams_t&, const math_cmd_opts_t&, wcstring&)’:
  /github/workspace/spk/fish/work-x64-7.0/fish-3.2.0/src/builtin_math.cpp:248:18: error: ‘__builtin_isinf_sign’ is not a member of ‘std’
           if (std::isinf(v)) {
                    ^
  /github/workspace/spk/fish/work-x64-7.0/fish-3.2.0/src/builtin_math.cpp:248:18: note: suggested alternative:
  <built-in>: note:   ‘__builtin_isinf_sign’
  /github/workspace/spk/fish/work-x64-7.0/fish-3.2.0/src/builtin_math.cpp:250:25: error: ‘__builtin_isnan’ is not a member of ‘std’
           } else if (std::isnan(v)) {
                           ^
  /github/workspace/spk/fish/work-x64-7.0/fish-3.2.0/src/builtin_math.cpp:250:25: note: suggested alternative:
  <built-in>: note:   ‘__builtin_isnan’
  make[4]: *** [CMakeFiles/fishlib.dir/build.make:365: CMakeFiles/fishlib.dir/src/builtin_math.cpp.o] Error 1
  make[3]: *** [CMakeFiles/Makefile2:953: CMakeFiles/fishlib.dir/all] Error 2
  make[2]: *** [Makefile:130: all] Error 2