Fixes for the official test suite, Readme logo, and upgrade `thiserror`

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 0% with 7 lines in your changes missing coverage. Please review.

Project coverage is 81.44%. Comparing base (8bdf0fc) to head (ba55eaf). Report is 9 commits behind head on main.

Files with missing lines	Patch %	Lines
openleadr-vtn/src/data_source/postgres/report.rs	0.00%	7 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #76 +/- ## ========================================== + Coverage 81.40% 81.44% +0.04% ========================================== Files 42 42 Lines 5495 5525 +30 ========================================== + Hits 4473 4500 +27 - Misses 1022 1025 +3 ```

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