[skip ci] allow manual trigger for building macOS x64 dmg

.github/workflows/mac-dmg-x64.yml

@@ -2,16 +2,25 @@ name: Build macOS .dmg for x64
 
 #######################################
 # STOP! DO NOT EDIT THIS FILE!
-# 
+#
 # It is a copy of mac-dmg.yml with tiny adjustements (mainly lines 42 to 47)
 # It was made necessary, since Github does not offer free macos intel runners for macos 15 and above.
-# This workflow can only be triggered by a release.
-# 
+#
 #######################################
 
 on:
   release:
     types: [published]
+  workflow_dispatch:
+    inputs:
+      version:
+        description: 'Version'
+        required: false
+      notarize:
+        description: 'Notarize'
+        required: true
+        default: false
+        type: boolean
 
 env:
   JAVA_DIST: 'temurin'