The black formatter is no longer beta (#5960)

* The black formatter is no longer beta

* pre-commit autoupdate

* pre-commit autoupdate

* Remove project_euler/problem_145 which is killing our CI tests

* updating DIRECTORY.md

Co-authored-by: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>

maths/numerical_integration.py

@@ -56,7 +56,7 @@ def trapezoidal_area(
 if __name__ == "__main__":
 
     def f(x):
-        return x ** 3
+        return x**3
 
     print("f(x) = x^3")
     print("The area between the curve, x = -10, x = 10 and the x axis is:")