Enable windows builds to match unit test config

Author: josephnoir

.github/workflows/main.yml

@@ -66,3 +66,8 @@ jobs:
   release-builds:
     name: Release builds
     uses: apple/swift-nio/.github/workflows/release_builds.yml@main
+    with:
+      windows_6_0_enabled: true
+      windows_6_1_enabled: true
+      windows_nightly_6_1_enabled: true
+      windows_nightly_main_enabled: true

.github/workflows/pull_request.yml

@@ -70,3 +70,8 @@ jobs:
   release-builds:
     name: Release builds
     uses: apple/swift-nio/.github/workflows/release_builds.yml@main
+    with:
+      windows_6_0_enabled: true
+      windows_6_1_enabled: true
+      windows_nightly_6_1_enabled: true
+      windows_nightly_main_enabled: true