Installing Google Web Designer on Ubuntu 20.04

`GLIBCXX_3.4.29` not found while installing Google Web Designer on Ubuntu 20.04

To fix this, execute the following:

#add repository
sudo add-apt-repository ppa:ubuntu-toolchain-r/test 
sudo apt-get update

#install gcc-11 which contains GLIBCXX_3.4.29
sudo apt-get install gcc-11

#use aptitude as it has better dependency management
sudo aptitude upgrade libstdc++6*

#verify
strings /usr/lib/x86_64-linux-gnu/libstdc++.so.6 | grep GLIBCXX


#should produce
LIBCXX_3.4
GLIBCXX_3.4.1
GLIBCXX_3.4.2
GLIBCXX_3.4.3
GLIBCXX_3.4.4
GLIBCXX_3.4.5
GLIBCXX_3.4.6
GLIBCXX_3.4.7
GLIBCXX_3.4.8
GLIBCXX_3.4.9
GLIBCXX_3.4.10
GLIBCXX_3.4.11
GLIBCXX_3.4.12
GLIBCXX_3.4.13
GLIBCXX_3.4.14
GLIBCXX_3.4.15
GLIBCXX_3.4.16
GLIBCXX_3.4.17
GLIBCXX_3.4.18
GLIBCXX_3.4.19
GLIBCXX_3.4.20
GLIBCXX_3.4.21
GLIBCXX_3.4.22
GLIBCXX_3.4.23
GLIBCXX_3.4.24
GLIBCXX_3.4.25
GLIBCXX_3.4.26
GLIBCXX_3.4.27
GLIBCXX_3.4.28
GLIBCXX_3.4.29
GLIBCXX_DEBUG_MESSAGE_LENGTH