Update upcoming trainings (#9744)

* Update upcoming trainings

* Remove old-ish link

* Revert "Remove old-ish link"

This reverts commit 30d75f5.

* Use crossref

* Add past training

doc/en/index.rst

@@ -1,11 +1,16 @@
 :orphan:
 
-..
-    .. sidebar:: Next Open Trainings
+.. sidebar:: Next Open Trainings
+
+   - `PyConDE <https://2022.pycon.de/program/W93DBJ/>`__, April 11th 2022 (3h), Berlin, Germany
+   - `PyConIT <https://pycon.it/en/talk/pytest-simple-rapid-and-fun-testing-with-python>`__, June 3rd 2022 (4h), Florence, Italy
+   - `Professional Testing with Python <https://python-academy.com/courses/python_course_testing.html>`_, via `Python Academy <https://www.python-academy.com/>`_, March 7th to 9th 2023 (3 day in-depth training), Remote and Leipzig, Germany
 
-       - `Professional Testing with Python <https://www.python-academy.com/courses/specialtopics/python_course_testing.html>`_, via `Python Academy <https://www.python-academy.com/>`_, February 1st to 3rd, 2022, Leipzig (Germany) and remote.
+   Also see :doc:`previous talks and blogposts <talks>`.
 
-       Also see `previous talks and blogposts <talks.html>`_.
+..
+   -  `Europython <https://ep2022.europython.eu/>`__, July 11th to 17th (3h), Dublin, Ireland
+   -  `CH Open Workshoptage <https://workshoptage.ch/>`__ (German), September 6th to 8th (1 day), Bern, Switzerland
 
 .. _features:
 

doc/en/talks.rst

@@ -17,6 +17,8 @@ Books
 Talks and blog postings
 ---------------------------------------------
 
+- `pytest: Simple, rapid and fun testing with Python, <https://youtu.be/cSJ-X3TbQ1c?t=15752>`_ (@ 4:22:32), Florian Bruhin, WeAreDevelopers World Congress 2021
+
 - Webinar: `pytest: Test Driven Development für Python (German) <https://bruhin.software/ins-pytest/>`_, Florian Bruhin, via mylearning.ch, 2020
 
 - Webinar: `Simplify Your Tests with Fixtures <https://blog.jetbrains.com/pycharm/2020/08/webinar-recording-simplify-your-tests-with-fixtures-with-oliver-bestwalter/>`_, Oliver Bestwalter, via JetBrains, 2020