License question: LGPL-2.1+ or LGPL-2.0+ ?

Commit c437e175 mentions LGPL-2.1+, but the license text is LGPL-2.0, and the source files mention LGPL-2.0+, e.g.:

https://gitlab.freedesktop.org/gstreamer/gst-libav/-/blob/master/ext/libav/gstav.c
https://gitlab.freedesktop.org/gstreamer/gst-libav/-/blob/master/ext/libav/gstavcfg.c
https://gitlab.freedesktop.org/gstreamer/gst-libav/-/blob/master/ext/libav/gstavvidenc.c
https://gitlab.freedesktop.org/gstreamer/gst-libav/-/blob/master/tests/check/elements/avaudenc.c

which all have:

 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.

So, could you clarify the license: is it LGPL-2.0+ or LGPL-2.1+?