Do not require leading quotes for high-entropy strings in ini and yaml (

#213)

detect_secrets/plugins/high_entropy_strings.py

@@ -30,7 +30,7 @@ def __init__(self, charset: str, limit: float) -> None:
 
         # We require quoted strings to reduce noise.
         # NOTE: We need this to be a capturing group, so back-reference can work.
-        self.regex = re.compile(r'([\'":=])\s*([{}]+)([\'"]?)'.format(re.escape(charset)))
+        self.regex = re.compile(r'([\'":=])\s*([{}]+)([\'"]|$)'.format(re.escape(charset)))
 
     def analyze_string(self, string: str) -> Generator[str, None, None]:
         for result in self.regex.findall(string):