Problem: persist-credentials might leak github token unintentionally

[yihuang]

Solution:

• try persist-credentials: false

👮🏻👮🏻👮🏻 !!!! REFERENCE THE PROBLEM YOUR ARE SOLVING IN THE PR TITLE AND DESCRIBE YOUR SOLUTION HERE !!!! DO NOT FORGET !!!! 👮🏻👮🏻👮🏻

PR Checklist:

• Have you read the CONTRIBUTING.md?
• Does your PR follow the C4 patch requirements?
• Have you rebased your work on top of the latest master?
• Have you checked your code compiles? (make)
• Have you included tests for any non-trivial functionality?
• Have you checked your code passes the unit tests? (make test)
• Have you checked your code formatting is correct? (go fmt)
• Have you checked your basic code style is fine? (golangci-lint run)
• If you added any dependencies, have you checked they do not contain any known vulnerabilities? (go list -json -m all | nancy sleuth)
• If your changes affect the client infrastructure, have you run the integration test?
• If your changes affect public APIs, does your PR follow the C4 evolution of public contracts?
• If your code changes public APIs, have you incremented the crate version numbers and documented your changes in the CHANGELOG.md?
• If you are contributing for the first time, please read the agreement in CONTRIBUTING.md now and add a comment to this pull request stating that your PR is in accordance with the Developer's Certificate of Origin.

Thank you for your code, it's appreciated! :)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 34.23%. Comparing base (e92dda1) to head (404e443).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1090   +/-   ##
=======================================
  Coverage   34.23%   34.23%           
=======================================
  Files          93       93           
  Lines       14151    14151           
=======================================
  Hits         4844     4844           
  Misses       8365     8365           
  Partials      942      942           

Flag	Coverage Δ
integration_tests	25.70% <ø> (ø)
integration_tests_byzantine	11.24% <ø> (ø)
integration_tests_gov	11.51% <ø> (ø)
integration_tests_grpc	11.51% <ø> (ø)
integration_tests_ibc	27.43% <ø> (ø)
integration_tests_ledger	11.49% <ø> (ø)
integration_tests_slow	11.49% <ø> (ø)
integration_tests_solomachine	11.28% <ø> (ø)
integration_tests_upgrade	11.51% <ø> (ø)

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