Update buildkite artifact path to only use forward slash (#109)

* Replace \\ in artifact path with forward slash

* Update buildkite windows builder queue

* Add agent flag to use platform normalised paths

* Update CHANGELOG.md

Author: Sean Parker

.buildkite/premerge.steps.yaml

@@ -13,11 +13,12 @@ windows: &windows
     - "environment=production"
     - "permission_set=builder"
     - "platform=windows"
-    - "queue=${WINDOWS_BUILDER_QUEUE:-v4-20-03-27-114536-bk10005-d340403f-d}"
+    - "queue=${WINDOWS_BUILDER_QUEUE:-v4-20-07-06-124455-bk13081-5d808a4a}"
     - "scaler_version=2"
     - "minimum_instances=1"
     - "agent_count=1"
     - "machine_type=quad"
+    - "experiment_normalised_upload_paths=true"
   timeout_in_minutes: 60 # TODO(ENG-548): reduce timeout once agent-cold-start is optimised.
   retry:
     automatic:

.buildkite/release-qa.steps.yaml

@@ -13,11 +13,12 @@ windows: &windows
     - "environment=production"
     - "permission_set=builder"
     - "platform=windows"
-    - "queue=${WINDOWS_BUILDER_QUEUE:-v4-20-03-27-114536-bk10005-d340403f-d}"
+    - "queue=${WINDOWS_BUILDER_QUEUE:-v4-20-07-06-124455-bk13081-5d808a4a}"
     - "scaler_version=2"
     - "minimum_instances=1"
     - "agent_count=1"
     - "machine_type=quad"
+    - "experiment_normalised_upload_paths=true"
   timeout_in_minutes: 60 # TODO(ENG-548): reduce timeout once agent-cold-start is optimised.
   retry:
     automatic:

ci/launch.sh

@@ -12,7 +12,7 @@ source ".shared-ci/scripts/pinned-tools.sh"
 
 # Download the artifacts and reconstruct the build/assemblies folder.
 traceStart "Downloading assembly :inbox_tray:"
-    buildkite-agent artifact download "build\assembly\**\*" .
+    buildkite-agent artifact download "build/assembly/**/*" .
 traceEnd
 
 uploadAssembly "${ASSEMBLY_PREFIX}" "${PROJECT_NAME}"