Dependencies: set upper limit werkzeug<2.2

[sphuber]

The werkzeug==2.2 release is breaking the REST API causing most of the
routes to return a 404 error.

[sphuber]

Seems that this issue of werkzeug may be the underlying cause.

[codecov]

Codecov Report

Merging #5606 (7f0e518) into main (bc73d61) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main    #5606      +/-   ##
==========================================
+ Coverage   79.69%   79.69%   +0.01%     
==========================================
  Files         532      532              
  Lines       37928    37928              
==========================================
+ Hits        30223    30224       +1     
+ Misses       7705     7704       -1     

Impacted Files	Coverage Δ
aiida/transports/plugins/local.py	81.85% <0.00%> (+0.25%)	⬆️

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[csadorf]

Seems that this issue of werkzeug may be the underlying cause.

A fix for this issue was released as part of Werkzeug version 2.2.1, however the test-install workflow still fails.

[sphuber]

Actually probably is this bug: pallets/werkzeug#2482

[csadorf]

Actually probably is this bug: pallets/werkzeug#2482

@sphuber Since it does not seem like the issue would be addressed in a timely manner, I suggest that we move forward with constraining the werkzeug version then (this PR).