Exit on pg_dump errors.

[evgeniy-r]

✓ Checklist:

• This PR has been added to CHANGELOG.md (at the top of the list).

[codecov-commenter]

Codecov Report

Merging #73 (db7aba4) into main (f744ee8) will decrease coverage by 0.14%.
The diff coverage is 24.00%.

❗ Current head db7aba4 differs from pull request most recent head 14557d1. Consider uploading reports for the commit 14557d1 to get more accurate results

@@            Coverage Diff             @@
##             main      #73      +/-   ##
==========================================
- Coverage   75.86%   75.72%   -0.15%     
==========================================
  Files          41       41              
  Lines        2279     2286       +7     
==========================================
+ Hits         1729     1731       +2     
- Misses        550      555       +5     

Impacted Files	Coverage Δ
datanymizer_dumper/src/postgres/dumper.rs	23.37% <0.00%> (-0.79%)	⬇️
datanymizer_dumper/src/postgres/table.rs	87.58% <100.00%> (+0.08%)	⬆️

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