Upgrade all manifests to v1 manifest format

manifests/d/Dropbox/Dropbox/117.4.378/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: Copyright (c) Dropbox, Inc.
+LicenseUrl: https://www.dropbox.com/terms
+MinimumOSVersion: 10.0.0.0
+PackageVersion: 117.4.378
+InstallerType: nullsoft
+Installers:
+- Architecture: x86
+  InstallerUrl: https://edge.dropboxstatic.com/dbx-releng/client/Dropbox%20117.4.378%20Offline%20Installer.exe
+  InstallerSha256: B8CA41A6EDCA8926F496A1AA288DD027C48EE8FF0593AF562FDD4F5AEF6308BE
+  Scope: machine
+  InstallerLocale: en-US
+PackageLocale: en-US
+ManifestType: singleton
+ManifestVersion: 1.0.0