ci: mkdir -Force necessary for integration:windows

Author: CMCDragonkai

.gitlab-ci.yml

@@ -339,6 +339,8 @@ integration:windows:
       optional: true
   tags:
     - windows
+  before_script:
+    - mkdir -Force "$CI_PROJECT_DIR/tmp"
   script:
     - Get-ChildItem -File ./builds/*-win-* | ForEach {& $_.FullName}
   rules: