fix(logs): do not log the MongoDB credentials

DataManager logged the full connection string, user and password included,
at startup. Log it through redact_uri (mongodb://***@host:port/...).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

ingestor/managers/data_manager.py

@@ -12,6 +12,22 @@ from sientia_do.temporal.constants import now
 import ingestor.metrics as metrics
 
 
+def redact_uri(uri: str) -> str:
+    """
+    Returns ``uri`` without the user and password, safe to log
+    (``mongodb://user:pass@host:27017/db`` -> ``mongodb://***@host:27017/db``).
+    """
+    prefix, sep, rest = uri.partition('://')
+    if not sep:
+        prefix, rest = '', uri
+    ends = [i for i in (rest.find('/'), rest.find('?')) if i != -1]
+    end = min(ends) if ends else len(rest)
+    authority, tail = rest[:end], rest[end:]
+    if '@' not in authority:
+        return uri
+    return f'{prefix}{sep}***@{authority.rpartition("@")[2]}{tail}'
+
+
 class DataManager(SientiaMonitoring):
     """
     Manages data persistence operations for the OPC Ingestor.
@@ -66,7 +82,8 @@ class DataManager(SientiaMonitoring):
         )
 
         logger.info(
-            f'Trying to initializing DataManager with MongoDB servers: {mongo_connection_string}'
+            'Trying to initializing DataManager with MongoDB servers: '
+            f'{redact_uri(mongo_connection_string)}'
         )
 
         self.connection_string = mongo_connection_string
@@ -82,7 +99,9 @@ class DataManager(SientiaMonitoring):
 
         self.metadata = metadata
 
-        logger.info(f'DataManager initialized with MongoDB servers: {self.connection_string}')
+        logger.info(
+            f'DataManager initialized with MongoDB servers: {redact_uri(self.connection_string)}'
+        )
 
     def shutdown(self):
         """