fix(pytest): Correct starlark deps

[mgred]

The dependencies set in the deps are not loaded in py_pytest_main.bzl.

This enables downstream targets to properly depend on @aspect_rules_py//py:defs

Otherwise we're running into an error:

ERROR: error loading package '@@rules_python+//docs': Unable to find package for @@[unknown repo 'dev_pip' requested from @@rules_python+]//:requirements.bzl: The repository '@@[unknown repo 'dev_pip' requested from @@rules_python+]' could not be resolved: No repository visible as '@dev_pip' from repository '@@rules_python+'.
ERROR: /private/var/tmp/_bazel_user/7870d530ca6897c426c1d0f00687a4c1/external/aspect_rules_py+/py/private/BUILD.bazel:62:12: error loading package '@@rules_python+//docs': Unable to find package for @@[unknown repo 'dev_pip' requested from @@rules_python+]//:requirements.bzl: The repository '@@[unknown repo 'dev_pip' requested from @@rules_python+]' could not be resolved: No repository visible as '@dev_pip' from repository '@@rules_python+'. and referenced by '@@aspect_rules_py+//py/private:py_pytest_main'

---

Test plan

• Covered by existing test cases
• New test cases added
• Manual testing; please provide instructions so we can reproduce:

bzl_library(
    name = "foo",
    srcs = ["foo.bzl"],
    deps = [
       "@aspect_rules_py//py:defs",
   ],
)

[aspect-workflows]

Test

All tests were cache hits

45 tests (100.0%) were fully cached saving 1m 49s.

[arrdem]

Thanks!