Add missing new (built) cobalt library

[sdebionne]

Solution to issue cannot be found in the documentation.

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Issue

Release 1.84 introduced two new libraries, one of them needs to be built: libboost-cobalt

Installed packages

# Name                    Version                   Build  Channel
libboost                  1.84.0               hcc118f5_1    conda-forge
libboost-devel            1.84.0               h91493d7_1    conda-forge
libboost-headers          1.84.0               h57928b3_1    conda-forge

Environment info

active environment : bliss2
    active env location : C:\Miniconda3\envs\bliss2
            shell level : 2
       user config file : C:\Users\debionne\.condarc
 populated config files : C:\Miniconda3\.condarc
                          C:\Users\debionne\.condarc
          conda version : 23.7.1
    conda-build version : not installed
         python version : 3.9.16.final.0
       virtual packages : __archspec=1=x86_64
                          __win=0=0
       base environment : C:\Miniconda3  (writable)
      conda av data dir : C:\Miniconda3\etc\conda
  conda av metadata url : None
           channel URLs : https://conda.anaconda.org/conda-forge/win-64
                          https://conda.anaconda.org/conda-forge/noarch
          package cache : C:\Miniconda3\pkgs
                          C:\Users\debionne\.conda\pkgs
                          C:\Users\debionne\AppData\Local\conda\conda\pkgs
       envs directories : C:\Miniconda3\envs
                          C:\Users\debionne\.conda\envs
                          C:\Users\debionne\AppData\Local\conda\conda\envs
               platform : win-64
             user-agent : conda/23.7.1 requests/2.27.1 CPython/3.9.16 Windows/10 Windows/10.0.19045
          administrator : True
             netrc file : None
           offline mode : False