Upgrade all manifests to v1 manifest format

manifests/d/Dropbox/Dropbox/104.4.175/Dropbox.Dropbox.yaml

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+PackageIdentifier: Dropbox.Dropbox
+Publisher: Dropbox
+PackageName: Dropbox
+Author: Dropbox
+ShortDescription: Organize all your team’s content, tune out distractions, and get everyone coordinated with the world’s first smart workspace.
+Moniker: Dropbox
+Tags:
+- cloud
+- online
+- storage
+- dropbox
+- pictures
+- files
+PackageUrl: https://www.dropbox.com
+License: MIT License
+LicenseUrl: https://www.dropbox.com/terms
+MinimumOSVersion: 10.0.0.0
+PackageVersion: 104.4.175
+InstallerSwitches:
+  Custom: ''
+  Silent: /s
+  SilentWithProgress: /s
+InstallerType: exe
+Installers:
+- Architecture: x86
+  InstallerUrl: https://clientupdates.dropboxstatic.com/dbx-releng/client/Dropbox%20104.4.175%20Offline%20Installer.exe
+  InstallerSha256: fd42205a424671d60bb8e6fa45b370e18dcfae8466b5d88f4c4fc29e9e549c6a
+  Scope: machine
+  InstallerLocale: en-US
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0