fix: cleaner await for sentry

Signed-off-by: Sam Gammon <[email protected]>

Author: sgammon

src/diagnostics.ts

@@ -216,7 +216,5 @@ export async function error(err: Error | unknown, fatal = true): Promise<void> {
  * Exit hook for making sure Sentry finishes reporting.
  */
 export async function onExit(): Promise<void> {
-  Sentry.close(2000).then(function () {
-    process.exit()
-  })
+  await Sentry.close(2000)
 }