Turn on mypy strict mode 🎉

[DanielNoord]

• Write a good description on what the PR does.
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Type of Changes

	Type
✓	🔨 Refactoring

Description

🎉

[Pierre-Sassoulas]

Do we need to fix those in a follow-up issue or do you think they are all justified ? Should we add a comment to tell why they're ignored ?

[DanielNoord]

Do we need to fix those in a follow-up issue or do you think they are all justified ? Should we add a comment to tell why they're ignored ?

They are ignored because mypy sets all imported modules it can't understand to Any. They will all become redundant whenever astroid or any of the other modules adds the py.typed file.
Adding the comment everywhere would be a bit too much I think.

[coveralls]

Pull Request Test Coverage Report for Build 3025221938

• 55 of 56 (98.21%) changed or added relevant lines in 21 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage decreased (-0.0005%) to 95.315%

---

Changes Missing Coverage	Covered Lines	Changed/Added Lines	%
pylint/utils/utils.py	1	2	50.0%

Totals
Change from base Build 3025218682:	-0.0005%
Covered Lines:	17027
Relevant Lines:	17864

---

💛 - Coveralls

[github-actions]

🤖 According to the primer, this change has no effect on the checked open source code. 🤖🎉

This comment was generated for commit 0469eec