[pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci

Author: pre-commit-ci[bot]

src/trio/_tests/test_exports.py

@@ -509,7 +509,7 @@ def lookup_symbol(symbol: str) -> dict[str, Any]:  # type: ignore[misc, explicit
             # (which might or might not happen and we don't know)
             missing.discard("__annotate_func__")
             missing.discard("__annotations_cache__")
-        
+
         if tool == "jedi" and class_ == trio.open_memory_channel:
             # something is seriously wrong with jedi's understanding of open_memory_channel...
             for attrib in (
@@ -522,7 +522,7 @@ def lookup_symbol(symbol: str) -> dict[str, Any]:  # type: ignore[misc, explicit
                 "__mul__",
                 "__rmul__",
                 "count",
-                "index"
+                "index",
             ):
                 missing.remove(class_)