Upgrade fluent-bit to 2.0.9

[jefferbrecht]

Description

Upgrade fluent-bit from 1.9.8 to 2.0.9. Notably, this upgrade includes fixes for the Windows 2012 lockup and Windows time zone parsing issues.

Related issue

• b/254846111 (2.x upgrade)
• b/240564518 (Windows 2012 lockup)
• b/218888265 (Windows time zone parsing)

How has this been tested?

• Unit tests pass
• Letting PR tests run
• build_and_test_all.sh passed all builds + tests (with some flakes/unrelated test failures; see upgrade ticket for details)

Checklist:

• Unit tests
  • Unit tests do not apply.
  • Unit tests have been added/modified and passed for this PR.
• Integration tests
  • Integration tests do not apply.
  • Integration tests have been added/modified and passed for this PR.
• Documentation
  • This PR introduces no user visible changes. [1]
  • This PR introduces user visible changes and the corresponding documentation change has been made.
• Minor version bump
  • This PR introduces no new features.
  • This PR introduces new features, and there is a separate PR to bump the minor version since the last release already.
  • This PR bumps the version.

[1] We document the time zone issue for Windows here. This shouldn't be needed once users upgrade to the new release of Ops Agent which includes this fix, but it may still be worth keeping around for a bit for users who haven't upgraded yet.

[jefferbrecht]

rocky-linux-9 failure is a flake; re-ran locally which passed:

=== PAUSE TestFluentForwardLog/rocky-linux-9
=== CONT  TestFluentForwardLog/rocky-linux-9
    agents.go:680: Test logs: /tmp/4094947281/TestFluentForwardLog_rocky-linux-9
    agents.go:680: Instance Log: https://console.cloud.google.com/logs/viewer?resource=gce_instance%2Finstance_id%2F5398937227559420999&project=stackdriver-kubernetes-1337
--- PASS: TestFluentForwardLog (0.00s)
    --- PASS: TestFluentForwardLog/rocky-linux-9 (167.66s)
PASS
ok      command-line-arguments  168.656s