Fix stable-baselines3 notebook for google colab usage (python 3.9)

[eruditus-vir]

Fix installations issues by installing setup-tools and fixing versions for highway-env, stable-baselines3.
Fix version for cloning of the highway-env to tag v1.6 because that's the last version that uses gym and that the record function is correct.
Add suppress warning because dataframe append is deprecated and this will show the warning messsage once.

[eleurent]

Hi, thanks for the proposal but

• these are old versions of both highway-env and SB3, using the old gym
• the current notebook runs fin with the latest release of highway-env, and the dev version of SB3 using the new gymnasium since this PR was merged last week
• SB3 will officially support gymnasium in their next release v2.0.0, at which point I'll replace the dev version by their stable release.

[eruditus-vir]

Hi, no issue, I just made this a month ago and didn't realise that it works now with the dev branch.

[eleurent]

I see, then thanks again for offering to share it!