fix(windows): failed to build honox on Windows (#173)

Author: mika-f

tsup.config.ts

@@ -2,6 +2,7 @@ import { glob } from 'glob'
 import { defineConfig } from 'tsup'
 
 const entryPoints = glob.sync('./src/**/*.+(ts|tsx|json)', {
+  posix: true,
   ignore: ['./src/**/*.test.+(ts|tsx)'],
 })