Spectron w/ Mocha testing

Happy New 2021!
I try to set up Spectron e2e testing of the electron app. The app is rendered but I get the error:
Error: Failed to create session.
session not created: This version of ChromeDriver only supports Chrome version 87
Current browser version is 76.0.3809.146 with binary path …

If I run in bash: “chromium --version” I get:
Chromium 83.0.4103.116 built on Debian bullseye/sid

How can I align the versions: I don’t see chromeDriver in node_packages and don’t get where the current browser is at and how to update it to a specific version.

System: Ubuntu 20.04, Chromium non-snap.

Any suggestions would be helpful,
Best,
Steffen