Unpin codecov uploader version (#2397)

Summary:
Pull Request resolved: #2397

This was pinned in #2385 to fix an issue with a broken codecov uploader 0.7.0, which has now been resolved in 0.7.1: codecov/codecov-cli#460

Reviewed By: esantorella

Differential Revision: D59112225

fbshipit-source-id: 9219812cc78ddee8e82b33a426f2af1c2d8a2f66

Author: Balandat

.github/workflows/reusable_test_pip.yml

@@ -52,5 +52,4 @@ jobs:
       with:
         fail_ci_if_error: true
         token: ${{ secrets.CODECOV_TOKEN }}
-        version: v0.6.0  # TODO: Unpin after codecov issue with 0.7.0 is resolved: https://github.com/codecov/codecov-cli/issues/460#issuecomment-2183042570
         files: ./botorch_cov.xml,./botorch_community_cov.xml