🤖 Merge PR DefinitelyTyped#60785 [react-calendar-timeline] add buffer…

… property by @tunganh-phamba

property buffer is missing according to https://github.com/namespace-ee/react-calendar-timeline#buffer

types/react-calendar-timeline/index.d.ts

@@ -252,7 +252,7 @@ declare module 'react-calendar-timeline' {
         resizeDetector?: ((containerResizeDetector: any) => void) | undefined;
         verticalLineClassNamesForTime?: ((start: number, end: number) => string[] | undefined) | undefined;
         horizontalLineClassNamesForGroup?: ((group: CustomGroup) => string[]) | undefined;
-
+        buffer?: number | undefined;
         // Fields that are in propTypes but not documented
         headerRef?: React.Ref<any> | undefined;
     }