Disable `//python/tests/toolchains:python_3_8_10_x86_64-apple-darwin_… (#830)

diff --git a/.bazelci/presubmit.yml b/.bazelci/presubmit.yml
index 1cc121a..6666549 100644
--- a/.bazelci/presubmit.yml
+++ b/.bazelci/presubmit.yml
@@ -12,7 +12,10 @@
   # We control Bazel version in integration tests, so we don't need USE_BAZEL_VERSION for tests.
   skip_use_bazel_version_for_test: true
   test_targets:
+    - "--"
     - "..."
+    # Disabled due to https://github.com/bazelbuild/rules_python/issues/827
+    - "-//python/tests/toolchains:python_3_8_10_x86_64-apple-darwin_test"
 platforms:
   ubuntu1804:
     <<: *all_targets
@@ -37,4 +40,4 @@
       # The dependencies needed for this test are not cross-platform: https://github.com/bazelbuild/rules_python/issues/260
       - "-//tests:pip_repository_entry_points_example"
     test_flags:
-      - "--test_tag_filters=-fix-windows"
\ No newline at end of file
+      - "--test_tag_filters=-fix-windows"