fix: resolve CI linting failures

- Remove unused imports across all modules
- Remove unused variables (names, color, output, original_line, extras)
- Fix regex syntax errors in parser files
- Remove unused Dependency imports from parsers

depaudit/checks/unused.py

@@ -120,7 +120,7 @@ class GoSourceParser(SourceParser):
                         )
                     )
 
-        inline_imports = re.findall(r'\bimport\s+[\"\']([^\"\']+)[\"\']', content)
+        inline_imports = re.findall(r'\bimport\s+["\']([^"\']+)["\']', content)
         for module_name in inline_imports:
             imports.append(
                 ImportStatement(