chore: Migrate from project.optional-dependencies to dependency-groups

Change-Id: I3895e6b9c4842123e63d986e698e0fce053ec2cc

Author: winstonsung

pyproject.toml

@@ -55,8 +55,10 @@ dependencies = [
 	"python-dotenv == 1.2.1",
 	"requests == 2.32.5",
 ]
+
+[dependency-groups]
 # Lock file: requirements_dev.txt
-optional-dependencies.dev = [
+dev = [
 	"black == 25.12.0",
 	"pylint == 4.0.4",
 	"pytest == 9.0.2",