[Fix] #1242 bug report broken tests for connect four in ci

[David-GERARD]

Description

Fixes #1242

The sb3 tutorial for connect_four breaks for versions of gymnasium>0.29.1, which makes the CI for all PR fail.
This PR is a temporary fix until a more permanent solution is found.

Type of change

• Bug fix (non-breaking change which fixes an issue)

Changes

• Removed SB3/connect_four from the tests in workflow .github/workflows/linux-tutorials-test.yml.
• Added a check for the versions of gymnasium in tutorials/SB3/connect_four/sb3_connect_four_action_mask.py that throws ImportError if gymnasium>0.29.1.
• Added a warning in the docs that the tutorial breaks for gymnasium>0.29.1 in docs/tutorials/sb3/connect_four.md

Checklist:

• I have run the pre-commit checks with pre-commit run --all-files (see CONTRIBUTING.md instructions to set it up)
• I have run pytest -v and no errors are present.
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• I solved any possible warnings that pytest -v has generated that are related to my code to the best of my knowledge.
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes