The other answers did not work for me. But the following solved the issue.

conda install -c conda-forge libstdcxx-ng --update-deps

Make sure to run the command above in your desired environment.

You can verify that GLIBCXX_3.4.32 is now supported using the following

strings ~/anaconda3/envs/YOUR_ENV/lib/libstdc++.so.6 | grep GLIBCXX_3.4.3

If you see GLIBCXX_3.4.32 listed, your code will work. (My specific case was importing the python library sounddevice.)