fix: update for breaking isexe api

Author: wraithgar

lib/index.js

@@ -1,4 +1,4 @@
-const isexe = require('isexe')
+const { isexe, sync: isexeSync } = require('isexe')
 const { join, delimiter, sep, posix } = require('path')
 
 const isWindows = process.platform === 'win32'
@@ -86,7 +86,7 @@ const whichSync = (cmd, opt = {}) => {
 
     for (const ext of pathExt) {
       const withExt = p + ext
-      const is = isexe.sync(withExt, { pathExt: pathExtExe, ignoreErrors: true })
+      const is = isexeSync(withExt, { pathExt: pathExtExe, ignoreErrors: true })
       if (is) {
         if (!opt.all) {
           return withExt