chore(maintenance): Change the project.toml to restrict Python 3.10 version

[leandrodamascena]

Issue number: #1404

Summary

Changes

Added a restriction in project.toml to only accept Python versions higher than 3.6.2 and lower than 3.10.

@heitorlessa @rubenfonseca should we add a paragraph to ensure that contributors/users are aware of this restriction?

User experience

Before: User could install the Lambda Powertools project even using Python 3.10.

After: User must use python lower than 3.10

Checklist

If your change doesn't seem to apply, please leave them unchecked.

• Meet tenets criteria
• I have performed a self-review of this change
• Changes have been tested
• Changes are documented
• PR title follows conventional commit semantics

Is this a breaking change?

RFC issue number:

Checklist:

• Migration process documented
• Implement warnings (if it can live side by side)

Acknowledgment

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[codecov-commenter]

Codecov Report

Merging #1412 (2606596) into develop (144e9cc) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           develop    #1412   +/-   ##
========================================
  Coverage    99.89%   99.89%           
========================================
  Files          119      119           
  Lines         5456     5456           
  Branches       624      624           
========================================
  Hits          5450     5450           
  Misses           2        2           
  Partials         4        4           

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[heitorlessa]

As discussed in the issue, closing as this will impact customers using OCI images.