Remove the structlog workaround and bump the version constraint

[wjddn279]

related: #65121

As the struclog release the version (26.1.0, https://github.com/hynek/structlog/releases/tag/26.1.0) including the fix of the issue, remove the workaround and bump the version constraint

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[wjddn279]

waiting until exclude-newer = "4 days" and it maybe 6/10