[bug] Approval, Request Change, Approve produces incorrect counting of valid approvals

[prince-chrismc]

Seems like this code is not working 🤔

conan-center-index-pending-review/pending_review/review.go

Lines 65 to 66 in 5a8ed9e

	if !new { // Duplicate review (usually an accident)
	break

---

Update:

Seems to be a consequence of #4, by maintaining a unique list of blockers/approvers we need to decrement the counter when approvals are disregarded

conan-center-index-pending-review/pending_review/review.go

Line 60 in 5a8ed9e

summary.HeadCommitApprovals = removeUnique(summary.HeadCommitApprovals, reviewerName)