Upgrading to poetry 1.2, resolving dependency issues

[JackUrb]

Overview

As titled, this PR upgrades the base version of poetry that the Mephisto project uses to 1.2. It also upgrades our ParlAI peer dependency to 1.7.0, however in the process drops support for python 3.7.

Discussion

Does dropping python 3.7 warrant moving to mephisto 1.1? I'm not sure where I land on this, though for now I've only bumped to 1.0.4 in this PR. @pringshia any thoughts?

Resolves #890

[codecov-commenter]

Codecov Report

Merging #898 (6219e6c) into main (51a2b1d) will decrease coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main     #898      +/-   ##
==========================================
- Coverage   64.63%   64.62%   -0.01%     
==========================================
  Files         108      108              
  Lines        9320     9318       -2     
==========================================
- Hits         6024     6022       -2     
  Misses       3296     3296              

Impacted Files	Coverage Δ
mephisto/data_model/unit.py	77.59% <0.00%> (-0.55%)	⬇️
...ractions/blueprints/mixins/screen_task_required.py	74.48% <0.00%> (-0.26%)	⬇️
mephisto/utils/metrics.py	29.32% <0.00%> (+0.21%)	⬆️

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[mojtaba-komeili]

Is this for setup problems or the tests failing? or both?

[mojtaba-komeili]

Is this for setup problems or the tests failing? or both?

NM, just saw the issue addressing this. Thanks for the fix.