Revert "chore: don't test docs on bazel 6 (#363)" (#364)

This reverts commit 1d047a7.

.github/workflows/ci.yaml

@@ -17,18 +17,9 @@ concurrency:
   cancel-in-progress: ${{ github.ref_name != 'main' }}
 
 jobs:
-  # Stardoc should only run on Bazel 7 because it uses a different extractor there
-  docgen:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v4
-      - run: bazel test //docs:all
-
   bazel-test:
     uses: bazel-contrib/.github/.github/workflows/bazel.yaml@v6
     with:
-      # Don't run diff_test in the docs/ folder, it's a separate job above
-      bazel_test_command: bazel test //... --test_lang_filters=-_diff
       folders: '[".", "example"]'
       # Root module is bzlmod-only.
       # Don't try for Windows support yet.