pre-commit: Upgrade psf/black for stable style 2023 (#8110)

* pre-commit: Upgrade psf/black for stable style 2023

Updating https://github.com/psf/black ... updating 22.12.0 -> 23.1.0 for their `2023 stable style`.
* https://github.com/psf/black/blob/main/CHANGES.md#2310

> This is the first [psf/black] release of 2023, and following our stability policy, it comes with a number of improvements to our stable style…

Also, add https://github.com/tox-dev/pyproject-fmt and https://github.com/abravalheri/validate-pyproject to pre-commit.

I only modified `.pre-commit-config.yaml` and all other files were modified by pre-commit.ci and psf/black.

* [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

conversions/decimal_to_binary.py

@@ -2,7 +2,6 @@
 
 
 def decimal_to_binary(num: int) -> str:
-
     """
     Convert an Integer Decimal Number to a Binary Number as str.
     >>> decimal_to_binary(0)

conversions/molecular_chemistry.py

@@ -86,7 +86,6 @@ def pressure_and_volume_to_temperature(
 
 
 if __name__ == "__main__":
-
     import doctest
 
     doctest.testmod()

conversions/roman_numerals.py

@@ -47,7 +47,7 @@ def int_to_roman(number: int) -> str:
     True
     """
     result = []
-    for (arabic, roman) in ROMAN:
+    for arabic, roman in ROMAN:
         (factor, number) = divmod(number, arabic)
         result.append(roman * factor)
         if number == 0:

conversions/temperature_conversions.py

@@ -380,7 +380,6 @@ def reaumur_to_rankine(reaumur: float, ndigits: int = 2) -> float:
 
 
 if __name__ == "__main__":
-
     import doctest
 
     doctest.testmod()

conversions/weight_conversion.py

@@ -307,7 +307,6 @@ def weight_conversion(from_type: str, to_type: str, value: float) -> float:
 
 
 if __name__ == "__main__":
-
     import doctest
 
     doctest.testmod()