chore(public-api): upgrade Node 12 based GitHub Actions

[moredatarequired]

GitHub has deprecated Node 12 based Actions; the two actions we need to update to comply with this are:

• Update semantic-pull-requests to v5.0.2
• Checkout to v3 (actually 2.5.0 which is called v3 🙃 )

Checklist

• Include reference to internal ticket "Fixes WB-NNNN" and/or GitHub issue "Fixes #NNNN" (if applicable)
• Ensure PR title compliance with the conventional commits standards

[codecov]

Codecov Report

Merging #4506 (ab0ab90) into main (7426e49) will increase coverage by 0.03%.
The diff coverage is n/a.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #4506      +/-   ##
==========================================
+ Coverage   83.08%   83.12%   +0.03%     
==========================================
  Files         259      259              
  Lines       32979    32979              
==========================================
+ Hits        27402    27413      +11     
+ Misses       5577     5566      -11     

Flag	Coverage Δ
functest	56.94% <ø> (+0.02%)	⬆️
unittest	73.32% <ø> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
wandb/sdk/lib/git.py	79.01% <0.00%> (ø)
wandb/sdk/wandb_run.py	90.89% <0.00%> (+0.23%)	⬆️
wandb/integration/tensorboard/monkeypatch.py	90.12% <0.00%> (+2.46%)	⬆️
wandb/sdk/internal/system/system_info.py	91.55% <0.00%> (+3.24%)	⬆️

[dmitryduev]

🙏🏻