Fix minimum version requirement for tomlkit

[snowwm]

PDM uses the method unwrap from tomlkit which was added only in tomlkit-0.11.0. When I upgraded PDM from an old version and ran it, I got an error because of this.

Pull Request Check List

I think these tasks are unnecessary for such a small change:

• A news fragment is added in news/ describing what is new.
• Test cases added for changed code.

Describe what you have changed in this PR.

[frostming]

Can you also update the pdm hash by running pdm lock --refresh?

[codecov-commenter]

Codecov Report

Base: 85.38% // Head: 85.33% // Decreases project coverage by -0.04% ⚠️

Coverage data is based on head (597b46b) compared to base (cfe2aa3).
Patch has no changes to coverable lines.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1539      +/-   ##
==========================================
- Coverage   85.38%   85.33%   -0.05%     
==========================================
  Files          91       91              
  Lines        8034     8034              
  Branches     1907     1907              
==========================================
- Hits         6860     6856       -4     
- Misses        785      788       +3     
- Partials      389      390       +1     

Flag	Coverage Δ
unittests	85.16% <ø> (-0.05%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
src/pdm/models/repositories.py	79.92% <0.00%> (-0.79%)	⬇️
src/pdm/termui.py	89.85% <0.00%> (-0.73%)	⬇️
src/pdm/cli/actions.py	78.50% <0.00%> (-0.25%)	⬇️

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[snowwm]

Could you do it yourself please? I have some trouble with that, getting weird errors:
[RequirementError]: Invalid marker: Invalid marker: '; platform_system == \\"Windows\\""', parse error at '; platfo'

[frostming]

Sure, done.

[snowwm]

Sorry, it should be 0.11.1 due to python-poetry/tomlkit@1cb4c25
Or maybe you know if there were more bugfixes later.