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>

strings/dna.py

@@ -2,7 +2,6 @@ import re
 
 
 def dna(dna: str) -> str:
-
     """
     https://en.wikipedia.org/wiki/DNA
     Returns the second side of a DNA strand

strings/hamming_distance.py

@@ -35,7 +35,6 @@ def hamming_distance(string1: str, string2: str) -> int:
 
 
 if __name__ == "__main__":
-
     import doctest
 
     doctest.testmod()

strings/levenshtein_distance.py

@@ -44,11 +44,9 @@ def levenshtein_distance(first_word: str, second_word: str) -> int:
     previous_row = list(range(len(second_word) + 1))
 
     for i, c1 in enumerate(first_word):
-
         current_row = [i + 1]
 
         for j, c2 in enumerate(second_word):
-
             # Calculate insertions, deletions and substitutions
             insertions = previous_row[j + 1] + 1
             deletions = current_row[j] + 1

strings/prefix_function.py

@@ -29,7 +29,6 @@ def prefix_function(input_string: str) -> list:
     prefix_result = [0] * len(input_string)
 
     for i in range(1, len(input_string)):
-
         # use last results for better performance - dynamic programming
         j = prefix_result[i - 1]
         while j > 0 and input_string[i] != input_string[j]:

strings/text_justification.py

@@ -33,7 +33,6 @@ def text_justification(word: str, max_width: int) -> list:
     words = word.split()
 
     def justify(line: list, width: int, max_width: int) -> str:
-
         overall_spaces_count = max_width - width
         words_count = len(line)
         if len(line) == 1: