fix: file URL when importing migrations so ESM will work on windows

closes #201
closes #202

Author: MikesGlitch

lib/load-migrations.js

@@ -2,6 +2,7 @@
 
 const path = require('path')
 const fs = require('fs').promises
+const url = require('node:url')
 const Migration = require('./migration')
 
 module.exports = loadMigrationsIntoSet
@@ -45,7 +46,7 @@ function loadMigrationsIntoSet (options, fn) {
           mod = require(filepath)
         } catch (e) {
           if (e.code === 'ERR_REQUIRE_ESM') {
-            mod = await import(filepath)
+            mod = await import(url.pathToFileURL(filepath))
           } else {
             return fn(e)
           }