press: Add LCA2022 talk link.

I made this one a YouTube link, as the conference page for it doesn't
actually have a link to the video recording or the slides. (The Kernel
miniconf page does, but it's one shated page for all LCA kernel
miniconfs since the beginning of time, so doesn't make for a great link
target.)

Change-Id: I5cafd1693e90ee7d88eee28437d52814f9b552b3
diff --git a/press.rst b/press.rst
index 16d078c..b744ca7 100644
--- a/press.rst
+++ b/press.rst
@@ -15,6 +15,8 @@
    <https://linux.conf.au/schedule/presentation/98/>`_
  - `KUnit Testing Stragegies — Linux Foundation Mentorship Series
    <https://linuxfoundation.org/webinars/kunit-testing-strategies/>`_
+ - `Kernel Testing with KUnit: Bridging the Gap — linux.conf.au 2022
+   <https://www.youtube.com/watch?v=Ffu08AL5WVI>`_
 
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