Add Slack 4.12.0 (#5633)

manifests/SlackTechnologies/Slack/4.12.0.yaml

@@ -0,0 +1,30 @@
+# ================== General ==================
+Id: SlackTechnologies.Slack
+Publisher: SlackTechnologies
+Name: Slack
+Author: SlackTechnologies
+Description: Slack brings the team together, wherever you are.
+AppMoniker: slack
+Tags: slack, remote, work, teams
+
+# ================== License ==================
+Homepage: https://slack.com/
+License: © Copyright 2020 Slack Technologies, Inc. All rights reserved.
+LicenseUrl: https://slack.com/intl/en-nl/terms-of-service
+
+# ================= Installer =================
+MinOSVersion: 10.0.0.0
+#Channel: stable                # Channel is not supported in this preview (5/24/2020)
+Version: 4.12.0
+
+InstallerType: msi
+Installers:
+  - Arch: x64
+    Url: https://downloads.slack-edge.com/releases/windows/4.12.0/prod/x64/slack-standalone-4.12.0.0.msi
+    Sha256: 5187ba9507cc5e56f93fa96f7ed3b66a86d2e762e4e89e27cbadc5971f7d0168
+    ProductCode: "{8C916447-9CA7-4963-8535-EBFB30BC0378}"
+  #- Arch: x86                  # Support for multiple installers are not supported in this preview (5/24/2020)
+    #Url: https://downloads.slack-edge.com/releases/windows/4.8.0/prod/ia32/slack-standalone-4.8.0.0.msi
+    #Sha256: 1fa7139880a75a79ef3b5088d28f4b573ceadf72df05b4cc3cb9cbec2a2e9542
+    
+# ManifestVersion: 0.1.0