Run `rules_cc` CI tasks on the right platforms

PiperOrigin-RevId: 799534222
Change-Id: Ic8f83a98849fc0cffb10672520b5e51fbfec516e
diff --git a/.bazelci/presubmit.yml b/.bazelci/presubmit.yml
index ff46559..7b78b4e 100644
--- a/.bazelci/presubmit.yml
+++ b/.bazelci/presubmit.yml
@@ -84,7 +84,7 @@
   windows_head:
     name: Windows (Bazel HEAD)
     bazel: last_green
-    platform: macos
+    platform: windows
     build_targets: *build_targets
     test_targets: *test_targets
 
@@ -104,7 +104,7 @@
   windows_bazel_6:
     name: Windows (Bazel 6)
     bazel: 6.3.0
-    platform: macos
+    platform: windows
     build_targets: *build_targets_bazel_6
     test_targets: *test_targets_bazel_6