[llvm] [libc++] Use GitHub-provided runners for the windows CI (PR #79326)

[Nikolas Klauser via llvm-commits]

https://github.com/philnik777 created https://github.com/llvm/llvm-project/pull/79326

None

>From 4f94a4f4626850744ce84f265604b648f130a2f8 Mon Sep 17 00:00:00 2001
From: Nikolas Klauser <nikolasklauser at berlin.de>
Date: Wed, 24 Jan 2024 17:42:53 +0100
Subject: [PATCH] [libc++] Use GitHub-provided runners for the windows CI

---
 .github/workflows/libcxx-build-and-test.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/.github/workflows/libcxx-build-and-test.yaml b/.github/workflows/libcxx-build-and-test.yaml
index 5727b956dc6dd23..f7847fd5f6ea33b 100644
--- a/.github/workflows/libcxx-build-and-test.yaml
+++ b/.github/workflows/libcxx-build-and-test.yaml
@@ -199,3 +199,9 @@ jobs:
             **/CMakeError.log
             **/CMakeOutput.log
             **/crash_diagnostics/*
+  windows:
+    runs-on: windows-2019
+    steps:
+      - uses: actions/checkout at v4
+        name: clang-cl (DLL)
+        run: libcxx/utils/ci/run-buildbot clang-cl-dll