fixes asynchronous error with a pinky promise

gulpfile.mjs

@@ -174,7 +174,7 @@ gulp.task('prepareDB', async function (done) {
 })
 
 
-function buildDB() {
+gulp.task('buildDB', function (done) {
     // Determine which source folders to process
 
     const PACK_SRC = "src/packs/__source"
@@ -193,8 +193,9 @@ function buildDB() {
 
         }
         resolve()
+        done()
     })
-}
+})
 
 
 export default series(
@@ -204,5 +205,5 @@ export default series(
     copyAssets,
     buildStyles,
     gulp.task('prepareDB'),
-    buildDB
+    gulp.task('buildDB')
 )