testing powershell on linux stopped working with Debian 10 upgrade

[plicease]

This installs a newer version of powershell on Debian 10, but the tests do not pass:

# this is for testing with the powershell preview
cip sudo apt-get install -y liblttng-ust0 libicu63
cip exec curl -L -O https://github.com/PowerShell/PowerShell/releases/download/v7.0.0-c.2/powershell-preview_7.0.0-rc.2-1.debian.10_amd64.deb
cip sudo dpkg -i powershell-preview_7.0.0-rc.2-1.debian.10_amd64.deb
cip exec rm -f powershell-preview_7.0.0-rc.2-1.debian.10_amd64.deb
cip sudo ln -s /usr/bin/pwsh-preview /usr/bin/pwsh