chore: fix JavaScript lint errors (issue #9110)

## Description
Fixed a `RangeError: Invalid time value` in 
`dispatch-workflow/lib/query.js` caused by calling `.toISOString()` 
on an invalid Date object when `info.reset` is undefined or 
not a valid number.

## Changes
- Added `typeof` check to ensure `info.reset` is a number
- Stored `getTime()` result in `time` variable
- Used `isNaN()` guard before calling `.toISOString()`

## Related Issues
resolves #9110

Signed-off-by: alok chando <chandoalok@gmail.com>

Author: alokchando

lib/node_modules/@stdlib/_tools/github/dispatch-workflow/lib/query.js

@@ -83,7 +83,21 @@ function query( slug, id, options, clbk ) {
 		info = ratelimit( response.headers );
 		debug( 'Rate limit: %d', info.limit );
 		debug( 'Rate limit remaining: %d', info.remaining );
-		debug( 'Rate limit reset: %s', (new Date( info.reset*1000 )).toISOString() );
+
+		var resetDate;
+		var time;
+
+		if ( typeof info.reset === 'number' ) {
+			resetDate = new Date( info.reset * 1000 );
+			time = resetDate.getTime();
+
+			debug(
+				'Rate limit reset: %s',
+				( isNaN( time ) ? 'invalid timestamp' : resetDate.toISOString() )
+			);
+		} else {
+			debug( 'Rate limit reset: not provided' );
+		}
 
 		if ( error ) {
 			return clbk( error, info );