docs: Update README.md rempve GITHUB_TOKEN prerequisite

[FabioPinheiro]

Update README.md to remove GITHUB_TOKEN as a prerequisite

[github-actions]

Unit Test Results

100 files  ±0  100 suites  ±0   17m 0s ⏱️ - 1m 35s
859 tests ±0  851 ✅ ±0  8 💤 ±0  0 ❌ ±0 
866 runs  ±0  858 ✅ ±0  8 💤 ±0  0 ❌ ±0 

Results for commit f6a58e8. ± Comparison against base commit 948e314.

[github-actions]

Integration Test Results

20 files  ±0  20 suites  ±0   2s ⏱️ ±0s
45 tests ±0  45 ✅ ±0  0 💤 ±0  0 ❌ ±0 
71 runs  ±0  71 ✅ ±0  0 💤 ±0  0 ❌ ±0 

Results for commit f6a58e8. ± Comparison against base commit 948e314.

[coveralls]

coverage: 48.864%. remained the same
when pulling f6a58e8 on FabioPinheiro-patch-2
into 948e314 on main.