Bump ruff from 0.0.252 to 0.0.259 (#15328)

* Bump ruff from 0.0.252 to 0.0.259

Bumps [ruff](https://github.com/charliermarsh/ruff) from 0.0.252 to 0.0.259.
- [Release notes](https://github.com/charliermarsh/ruff/releases)
- [Changelog](https://github.com/charliermarsh/ruff/blob/main/BREAKING_CHANGES.md)
- [Commits](https://github.com/charliermarsh/ruff/compare/v0.0.252...v0.0.259)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

* Fix new warnings

* Mypy

* Newsfile

---------

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Erik Johnston <erik@matrix.org>

tests/server.py

@@ -983,7 +983,9 @@ def setup_test_homeserver(
                     dropped = True
                 except psycopg2.OperationalError as e:
                     warnings.warn(
-                        "Couldn't drop old db: " + str(e), category=UserWarning
+                        "Couldn't drop old db: " + str(e),
+                        category=UserWarning,
+                        stacklevel=2,
                     )
                     time.sleep(0.5)
 
@@ -991,7 +993,11 @@ def setup_test_homeserver(
             db_conn.close()
 
             if not dropped:
-                warnings.warn("Failed to drop old DB.", category=UserWarning)
+                warnings.warn(
+                    "Failed to drop old DB.",
+                    category=UserWarning,
+                    stacklevel=2,
+                )
 
         if not LEAVE_DB:
             # Register the cleanup hook