chore(api/libs): Apply ruff format. (#7301)

api/libs/smtp.py

@@ -5,7 +5,9 @@ from email.mime.text import MIMEText
 
 
 class SMTPClient:
-    def __init__(self, server: str, port: int, username: str, password: str, _from: str, use_tls=False, opportunistic_tls=False):
+    def __init__(
+        self, server: str, port: int, username: str, password: str, _from: str, use_tls=False, opportunistic_tls=False
+    ):
         self.server = server
         self.port = port
         self._from = _from
@@ -25,17 +27,17 @@ class SMTPClient:
                     smtp = smtplib.SMTP_SSL(self.server, self.port, timeout=10)
             else:
                 smtp = smtplib.SMTP(self.server, self.port, timeout=10)
-                
+
             if self.username and self.password:
                 smtp.login(self.username, self.password)
 
             msg = MIMEMultipart()
-            msg['Subject'] = mail['subject']
-            msg['From'] = self._from
-            msg['To'] = mail['to']
-            msg.attach(MIMEText(mail['html'], 'html'))
+            msg["Subject"] = mail["subject"]
+            msg["From"] = self._from
+            msg["To"] = mail["to"]
+            msg.attach(MIMEText(mail["html"], "html"))
 
-            smtp.sendmail(self._from, mail['to'], msg.as_string())
+            smtp.sendmail(self._from, mail["to"], msg.as_string())
         except smtplib.SMTPException as e:
             logging.error(f"SMTP error occurred: {str(e)}")
             raise