ci: bump Windows workdirs (#12918)

Since #12645, we added a new pipeline, so we need to add a corresponding
entry.

As for #12645, the content of the files and the directory structure is
taken directly from a live CI node, as printed by the (now-named)
`workdirs` step.

CHANGELOG_BEGIN
CHANGELOG_END

ci/build.yml

@@ -192,6 +192,7 @@ jobs:
           cat $f
           echo "-----"
         done
+      name: workdirs
     - bash: |
         set -euo pipefail
         git checkout $(release_sha)

infra/vsts_agent_windows.tf

@@ -11,13 +11,13 @@ locals {
   w = [
     {
       name       = "ci-w1",
-      size       = 0,
+      size       = 6,
       assignment = "default",
       disk_size  = 400,
     },
     {
       name       = "ci-w2"
-      size       = 6,
+      size       = 0,
       assignment = "default",
       disk_size  = 400,
     },
@@ -194,9 +194,38 @@ Set-Content -Path 'D:\a\SourceRootMapping\cb88e308-485c-40f9-81b5-dcabba9e55d2\4
   "repositoryUrl": "https://github.com/digital-asset/daml",
   "system": "build"
 }'
+New-Item -ItemType Directory -Path 'D:\a\SourceRootMapping\cb88e308-485c-40f9-81b5-dcabba9e55d2\40'
+New-Item -ItemType Directory -Path 'D:\a\SourceRootMapping\cb88e308-485c-40f9-81b5-dcabba9e55d2\40\da86374d7fbb90b47db2b7fe49e04373d7a0f7dc'
+Set-Content -Path 'D:\a\SourceRootMapping\cb88e308-485c-40f9-81b5-dcabba9e55d2\40\da86374d7fbb90b47db2b7fe49e04373d7a0f7dc\SourceFolder.json' `
+  -Value '{
+  "build_artifactstagingdirectory": "4\\a",
+  "agent_builddirectory": "4",
+  "collectionUrl": "https://dev.azure.com/digitalasset/",
+  "definitionName": "digital-asset.daml.daily-snapshot",
+  "repositoryTrackingInfo": [
+    {
+      "identifier": "self",
+      "repositoryType": "GitHub",
+      "repositoryUrl": "https://github.com/digital-asset/daml",
+      "sourcesDirectory": "4\\s\\daml"
+    }
+  ],
+  "fileFormatVersion": 3,
+  "lastRunOn": "02/14/2022 11:38:15 +00:00",
+  "repositoryType": "GitHub",
+  "lastMaintenanceAttemptedOn": "",
+  "lastMaintenanceCompletedOn": "",
+  "build_sourcesdirectory": "4\\s",
+  "common_testresultsdirectory": "4\\TestResults",
+  "collectionId": "cb88e308-485c-40f9-81b5-dcabba9e55d2",
+  "definitionId": "40",
+  "hashKey": "da86374d7fbb90b47db2b7fe49e04373d7a0f7dc",
+  "repositoryUrl": "https://github.com/digital-asset/daml",
+  "system": "build"
+}'
 Set-Content -Path 'D:\a\SourceRootMapping\Mappings.json' -Value '{
-  "lastBuildFolderCreatedOn": "01/28/2022 11:43:49 +00:00",
-  "lastBuildFolderNumber": 3
+  "lastBuildFolderCreatedOn": "02/14/2022 11:38:15 +00:00",
+  "lastBuildFolderNumber": 4
 }'
 # end folder pinning