Pyright failures with 1.1.309

[tsibley]

On master (8ed366e)

$ npx pyright@1.1.308
Need to install the following packages:
  pyright@1.1.308
Ok to proceed? (y) y
0 errors, 0 warnings, 0 informations 

$ npx pyright@1.1.309
Need to install the following packages:
  pyright@1.1.309
Ok to proceed? (y) y
/home/tom/nextstrain/cli/nextstrain/cli/remote/s3.py
  /home/tom/nextstrain/cli/nextstrain/cli/remote/s3.py:213:39 - error: Cannot access member "Bucket" for type "_"
    Member "Bucket" is unknown (reportGeneralTypeIssues)
/home/tom/nextstrain/cli/nextstrain/cli/runner/aws_batch/s3.py
  /home/tom/nextstrain/cli/nextstrain/cli/runner/aws_batch/s3.py:208:26 - error: "client" is not a known member of "None" (reportOptionalMemberAccess)
  /home/tom/nextstrain/cli/nextstrain/cli/runner/aws_batch/s3.py:212:24 - error: Cannot access member "Bucket" for type "_"
    Member "Bucket" is unknown (reportGeneralTypeIssues)
3 errors, 0 warnings, 0 informations 

1.1.309 was released last week, and we likely didn't notice failures due to existing failing CI.