Feature: pdm lock --refresh

[frostming]

Pull Request Check List

• 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.

Close #642

[codecov-commenter]

Codecov Report

Merging #812 (d04a905) into main (cb186d8) will increase coverage by 0.01%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #812      +/-   ##
==========================================
+ Coverage   83.94%   83.95%   +0.01%     
==========================================
  Files          74       74              
  Lines        6258     6262       +4     
  Branches     1123     1124       +1     
==========================================
+ Hits         5253     5257       +4     
  Misses        701      701              
  Partials      304      304              

Flag	Coverage Δ
unittests	83.74% <100.00%> (+0.01%)	⬆️

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Impacted Files	Coverage Δ
pdm/cli/actions.py	77.34% <100.00%> (+0.18%)	⬆️
pdm/cli/commands/lock.py	100.00% <100.00%> (ø)

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