Use latest tag for manual workflow triggers

.github/workflows/aur-update.yml

@@ -5,11 +5,6 @@ on:
     tags:
       - "v[0-9]+.[0-9]+.[0-9]+"
   workflow_dispatch:
-    inputs:
-      tag:
-        description: 'Release tag (e.g., v0.16.1)'
-        required: true
-        type: string
 
 jobs:
   update-aur:
@@ -25,7 +20,9 @@ jobs:
         run: |
           # Determine the tag based on trigger type
           if [ "${{ github.event_name }}" = "workflow_dispatch" ]; then
-            TAG="${{ inputs.tag }}"
+            # Get the latest tag when manually triggered
+            git fetch --tags
+            TAG=$(git describe --tags --abbrev=0)
           else
             TAG="${GITHUB_REF_NAME}"
           fi