Added Dropbox version 108.4.453. (#4499)

manifests/Dropbox/Dropbox/108.4.453.yaml

@@ -0,0 +1,33 @@
+# ================== General ==================
+Id: Dropbox.Dropbox
+Publisher: Dropbox
+Name: Dropbox
+Author: Dropbox
+Description: Organize all your team’s content, tune out distractions, and get everyone coordinated with the world’s first smart workspace.
+AppMoniker: Dropbox
+Tags: cloud, online, storage, dropbox, pictures, files
+
+# ================== License ==================
+Homepage: https://www.dropbox.com
+License: Copyright (c) Dropbox, Inc.
+LicenseUrl: https://www.dropbox.com/terms
+
+# ================= Installer =================
+MinOSVersion: 10.0.0.0
+#Channel: stable                # Channel is not supported in this preview (5/24/2020)
+Version: 108.4.453
+
+Switches:
+      Custom: 
+      Silent: /s
+      SilentWithProgress: /s
+
+InstallerType: exe
+Installers:
+  - Arch: x86
+    Url: https://clientupdates.dropboxstatic.com/dbx-releng/client/Dropbox%20108.4.453%20Offline%20Installer.exe   # https://www.dropbox.com/downloading?full=1&os=win
+    Sha256: 91454B139AC80A4C436BEE4088B782AB0723777FBEBB479F5E7B5786E2F85397
+    Scope: machine
+    Language: en-US
+    
+# ManifestVersion: 0.1.0