Use path as-is for SQLite database

Also add bridge config migration to remove extra slashes

Author: tulir

mautrix/bridge/config.py

@@ -115,7 +115,12 @@ def do_update(self, helper: ConfigUpdateHelper) -> None:
         copy("appservice.tls_cert")
         copy("appservice.tls_key")
 
-        copy("appservice.database")
+        if "appservice.database" in self and self["appservice.database"].startswith("sqlite:///"):
+            helper.base["appservice.database"] = self["appservice.database"].replace(
+                "sqlite:///", "sqlite:"
+            )
+        else:
+            copy("appservice.database")
         copy("appservice.database_opts")
 
         copy("appservice.id")

mautrix/util/async_db/aiosqlite.py

@@ -106,8 +106,6 @@ def __init__(
         )
         self._parent = None
         self._path = url.path
-        if self._path.startswith("/"):
-            self._path = self._path[1:]
         self._pool = asyncio.Queue(self._db_args.pop("min_size", 1))
         self._db_args.pop("max_size", None)
         self._stopped = False