Chore: ng lint using the recommended @angular-eslint style

bookie/src/app/bill-settlement-report/bill-settlement-report.service.ts

@@ -24,10 +24,10 @@ export class BillSettlementReportService {
     if (finishDate !== null) {
       options.params = options.params.set('f', finishDate);
     }
-    return <Observable<BillSettlementReport>>(
-      this.http
-        .get<BillSettlementReport>(url, options)
-        .pipe(catchError(this.log.handleError(serviceName, 'get')))
-    );
+    return this.http
+      .get<BillSettlementReport>(url, options)
+      .pipe(
+        catchError(this.log.handleError(serviceName, 'get')),
+      ) as Observable<BillSettlementReport>;
   }
 }