Tool: update AMReX dependency (#1710)

* Tool: update AMReX dependency

We currently pull the `development` branch of AMReX in CMake builds.

This is problematic in central workflows:
- checking out a release might not compile
- manual intervention is needed by users
- builds are not as reproducibile as they could be
- CI fails in a surprising wary in WarpX if a temporary bug is lands
  in AMReX' `development`

Instead, we can bump the AMReX requirement periodically in a PR.
This migh be the case when we:
- need new features or bug fixes
- do a release

Manual updates guarantee that we see problems with updates from
AMReX in the moment they are introduced - during a PR that changes
the dependency to AMReX.

* Tool: update PICSAR dependency

See AMReX' updater description.

* Docs: Dependencies & Releases

Update and add workflows.

* PICSAR & AMReX: Bump Version to HEAD

Bump the PICSAR and AMReX versions to the latest head.
Executed with:
```
./Tools/Release/updateAMReX.py
./Tools/Release/updatePICSAR.py
```

* Python Tools: Cleanup

* Fix typos

Co-authored-by: Luca Fedeli <luca.fedeli@for.unipi.it>

Co-authored-by: Luca Fedeli <luca.fedeli@for.unipi.it>

1 files changed, 1 insertions, 1 deletions

diff --git a/Docs/source/developers/developers.rst b/Docs/source/developers/developers.rst
index 94777c4e0..a1ffb7c65 100644
--- a/Docs/source/developers/developers.rst
+++ b/Docs/source/developers/developers.rst
@@ -25,5 +25,5 @@ Our Doxygen API documentation in classic formatting `is located here <../_static
    testing
    documentation
    performance_tests
-   workflow
+   release
    checksum