chore: update pyproject.toml

Author: AlgorithmAlchemy

pyproject.toml

@@ -1,4 +1,5 @@
 # pyproject.toml
+
 [build-system]
 requires = ["setuptools>=42", "wheel"]
 build-backend = "setuptools.build_meta"
@@ -14,7 +15,8 @@ authors = [
 requires-python = ">=3.8"
 keywords = [
     "flake8", "linter", "comments", "strings", "non-english", "ascii",
-    "code-quality", "static-analysis", "plugin", "python"
+    "code-quality", "static-analysis", "plugin", "python","code style",
+    "quality assurance", "code standards"
 ]
 license = { text = "MIT" }
 classifiers = [
@@ -32,7 +34,13 @@ classifiers = [
     "Programming Language :: Python :: 3.12",
     "Programming Language :: Python :: 3.13",
     "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent"
+]
+
+dependencies = [
+    "regex>=2021.4.4"
 ]
 
 [project.entry-points."flake8.extension"]
 NLE = "flake8_no_english.checker:NonEnglishChecker"
+