Merge pull request 'use the repository-specific issue index instead of the global issue ID.' (#2) from stackit into main

Reviewed-on: #2

approval.go

@@ -111,7 +111,7 @@ func (a *approvalEnvironment) createApprovalIssue(_ context.Context) error {
 	}
 
 	a.approvalIssue = created
-	a.approvalIssueNumber = int(created.ID)
+	a.approvalIssueNumber = int(created.Index)
 
 	fmt.Printf("Issue created: %s\n", a.approvalIssue.HTMLURL)
 	return nil