Upgrade pytype version to the latest (2022.1.13)

[seratch]

This pull request upgrades pytype version to the latest (2022.1.13). I didn't observe any new detections by the version.

Category (place an x in each of the [ ])

• slack_bolt.App and/or its core components
• slack_bolt.async_app.AsyncApp and/or its core components
• Adapters in slack_bolt.adapter
• Document pages under /docs
• Others

Requirements (place an x in each [ ])

Please read the Contributing guidelines and Code of Conduct before creating this issue or pull request. By submitting, you are agreeing to those rules.

• I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• I've read and agree to the Code of Conduct.
• I've run ./scripts/install_all_and_run_tests.sh after making the changes.

[codecov]

Codecov Report

Merging #581 (49a024d) into main (dc48378) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #581   +/-   ##
=======================================
  Coverage   91.49%   91.49%           
=======================================
  Files         169      169           
  Lines        5701     5701           
=======================================
  Hits         5216     5216           
  Misses        485      485           

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