workhorse: Update module gitlab.com/gitlab-org/labkit to v1.31.2

This MR contains the following updates:

Package	Type	Update	Change
gitlab.com/gitlab-org/labkit	require	minor	v1.30.0 -> v1.31.2

MR created with the help of gitlab-org/frontend/renovate-gitlab-bot

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Release Notes

gitlab-org/labkit (gitlab.com/gitlab-org/labkit)

v1.31.2

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Bug Fixes

• monitoring: Improve profiler user experience. (2d4cb6a)

v1.31.1

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Bug Fixes

• avoid modifying the original http.Request in RoundTripper (f9545da)

v1.31.0

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Features

• log: added gRPC access logs (3885e29)

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