release-tool: Create output dir if it does not exist and revert previous build-src patch

[phoerious]

Revert commit 36a2630 and add a proper fix for the issue. The error was not the source file vanishing, it was the target directory not existing.

The previous patch was incorrect and caused truncation issues of the source tarball. The result was a missing .gitrev file.

Type of change

• ✅ Bug fix (non-breaking change that fixes an issue)

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 64.59%. Comparing base (36a2630) to head (ade0550).
⚠️ Report is 1 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop   #13143      +/-   ##
===========================================
- Coverage    64.60%   64.59%   -0.00%     
===========================================
  Files          378      378              
  Lines        39907    39907              
===========================================
- Hits         25778    25777       -1     
- Misses       14129    14130       +1     

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