re-enable nightly Windows 6.2.1 CI

Author: matthewbastien

.github/workflows/nightly.yml

@@ -114,5 +114,3 @@ jobs:
       windows_pre_build_command: . .github\workflows\scripts\windows\setup.ps1
       windows_build_command: Invoke-Program scripts\test_windows.ps1
       enable_windows_docker: false
-      # TODO re-enable when 6.2.1 toolchain working
-      enable_windows_checks: false

.github/workflows/pull_request.yml

@@ -64,7 +64,7 @@ jobs:
       linux_pre_build_command: . .github/workflows/scripts/setup-linux.sh
       linux_build_command: ./scripts/test.sh
       # Windows
-      windows_exclude_swift_versions: "${{ contains(github.event.pull_request.labels.*.name, 'full-test-run') && '[{\"swift_version\": \"nightly-6.1\"},{\"swift_version\": \"nightly\", {\"swift_version\": \"6.2\"}}]' || '[{\"swift_version\": \"nightly-6.1\"},{\"swift_version\": \"nightly-6.2\"},{\"swift_version\": \"nightly\"}]' }}"
+      windows_exclude_swift_versions: "${{ contains(github.event.pull_request.labels.*.name, 'full-test-run') && '[{\"swift_version\": \"nightly-6.1\"},{\"swift_version\": \"nightly\"}]' || '[{\"swift_version\": \"nightly-6.1\"},{\"swift_version\": \"nightly-6.2\"},{\"swift_version\": \"nightly\"}]' }}"
       windows_env_vars: |
         CI=1
         FAST_TEST_RUN=${{ contains(github.event.pull_request.labels.*.name, 'full-test-run') && '0' || '1'}}