Fix: Let pontos run when no initial tag is in the repository.

[y0urself]

What:

Fix: Let pontos run when no initial tag is in the repository.

Why:

It didn't run without tags in a repository

How:

• Just look for commits in HEAD to parse conventional commits

Checklist:

• Tests
• Conventional commit message
• Documentation

[codecov]

Codecov Report

Merging #276 (9ff8919) into main (ef5f644) will increase coverage by 0.03%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #276      +/-   ##
==========================================
+ Coverage   85.35%   85.39%   +0.03%     
==========================================
  Files          27       27              
  Lines        1516     1520       +4     
  Branches      223      224       +1     
==========================================
+ Hits         1294     1298       +4     
  Misses        173      173              
  Partials       49       49              

Impacted Files	Coverage Δ
pontos/changelog/conventional_commits.py	69.69% <100.00%> (+1.27%)	⬆️

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