control whether to run dput when manually dispatching debian workflow

.github/workflows/debian.yml

@@ -4,6 +4,12 @@ on:
   release:
     types: [published]
   workflow_dispatch:
+    inputs:
+      dput:
+        description: 'Upload to PPA'
+        required: true
+        default: false
+        type: boolean
 
 env:
   JAVA_VERSION: 17
@@ -99,7 +105,7 @@ jobs:
             cryptomator_*_amd64.deb
             cryptomator_*.asc
       - name: Run dput to beta repo
-        if: startsWith(github.ref, 'refs/tags/')
+        if: startsWith(github.ref, 'refs/tags/') || github.event.inputs.dput
         run: dput ppa:sebastian-stenzel/cryptomator-beta cryptomator_*_source.changes
       - name: Publish Debian package on GitHub Releases
         if: startsWith(github.ref, 'refs/tags/')