feat: bump to 0.31.0

[bzp2010]

Description

Bump the version to 0.31.0.

Checklist

• I have explained the need for this PR and the problem it solves
• I have explained the changes or the new features added to this PR
• I have added tests corresponding to this change
• I have updated the documentation to reflect this change
• I have verified that this change is backward compatible

Summary by CodeRabbit

• Release
  • Updated the CLI and Rust workspace version to 0.31.0.

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[bzp2010]

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