fix: make flake8 6.x happy

fix: make flake8 6.x happy

./src/bindings/python/bt2/bt2/trace_collection_message_iterator.py:143:12: E721 do not compare types, for exact checks use `is` / `is not`, for instance checks use `isinstance()`
./src/bindings/python/bt2/bt2/trace_collection_message_iterator.py:151:12: E721 do not compare types, for exact checks use `is` / `is not`, for instance checks use `isinstance()`
./src/bindings/python/bt2/bt2/trace_collection_message_iterator.py:156:16: E721 do not compare types, for exact checks use `is` / `is not`, for instance checks use `isinstance()`
./src/bindings/python/bt2/bt2/trace_collection_message_iterator.py:160:16: E721 do not compare types, for exact checks use `is` / `is not`, for instance checks use `isinstance()`
./src/bindings/python/bt2/bt2/trace_collection_message_iterator.py:164:16: E721 do not compare types, for exact checks use `is` / `is not`, for instance checks use `isinstance()`
./src/bindings/python/bt2/bt2/trace_collection_message_iterator.py:168:16: E721 do not compare types, for exact checks use `is` / `is not`, for instance checks use `isinstance()`
./tests/data/auto-source-discovery/params-log-level/bt_plugin_test.py:33:20: E721 do not compare types, for exact checks use `is` / `is not`, for instance checks use `isinstance()`

Change-Id: I388dfe9b1c8fa7030a805e6c6e0e487e56947616
Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Reviewed-on: https://review.lttng.org/c/babeltrace/+/10612
Reviewed-by: Simon Marchi <simon.marchi@efficios.com>
Tested-by: jenkins <jenkins@lttng.org>