bugfix with auth

.env.template

@@ -1,4 +1,4 @@
 OPENAI_API_KEY="..."
 ELEVEN_LABS_API_KEY="..."
-AUTH_USERS="admin,community_user"
+AUTH_USER="user"
 AUTH_PASS="..."

app.py

@@ -12,12 +12,10 @@ from src.builder import AudiobookBuilder
 from src.config import logger, FILE_SIZE_MAX
 
 
-def get_auth_params() -> List[tuple[str, str]]:
-    users = os.environ["AUTH_USERS"].split(",")
-    passwords = os.environ["AUTH_PASS"].split(",")
-
-    auth_list = [(u, passwords[0] if len(passwords) == 1 else p) for u, p in zip(users, passwords)]
-    return auth_list
+def get_auth_params():
+    user = os.environ["AUTH_USER"]
+    password = os.environ["AUTH_PASS"]
+    return (user, password)
 
 
 def parse_pdf(file_path):