fix: Fixes possible wrong lost events count

[Darkheir]

When the last sequence is equal or higher to the current sequence the uint to int conversion results in a wrong count.

Here's a simple example reproducing the issue:

last_sequence := uint32(10)
sequence := uint32(10)

int(sequence - last_sequence - 1)  // Will give 4294967295

[cla-checker-service[bot]]

💚 CLA has been signed

[elasticmachine]

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• Start Time: 2023-01-03T10:53:16.643+0000

• Duration: 2 min 10 sec

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• Description: approval-list/elastic/go-libaudit.yml

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• Description: githubApiCall: The REST API call https://api.github.com/orgs/elastic/members/Darkheir return the message : java.lang.Exception: httpRequest: Failure connecting to the service https://api.github.com/orgs/elastic/members/Darkheir : httpRequest: Failure connecting to the service https://api.github.com/orgs/elastic/members/Darkheir : Code: 404Error: {"message":"User does not exist or is not a member of the organization","documentation_url":"https://docs.github.com/rest/reference/orgs#check-organization-membership-for-a-user"}