[receiver/datadogreceiver] Use thread safe LRU

[rbeckmancostar]

Description

Uses the thread safe lru package in golang-lru rather than the simplelru within that package.

Link to tracking issue

Fixes #42644
Potentially may fix the 40557 issue as well but I was not able to recreate it.

Testing

Performed the testing as directed in contributing.md

[linux-foundation-easycla]

• ❌ - login: @rbeckmancostar / name: Robert Beckman . The commit (b3975ce) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

[github-actions]

Welcome, contributor! Thank you for your contribution to opentelemetry-collector-contrib.

Important reminders:

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• Don't forget to sign the Contributor License Agreement (CLA) if you haven't already.

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[atoulme]

Please review the CLA and sign it, as well as add a changelog to this PR, and mark it ready for review again.

[feynmanloo]

Is there a plan to fix this issue?My publishing process is somewhat blocked. Could you please help expedite the process?
@rbeckmancostar

[MitchStephan]

Pinging on this again as it fixes a fatal error. It seems the only blockers are the CLA and changelog.

If the original contributor @rbeckmancostar isn't available, could a maintainer like @atoulme or @xiu please pick this up to finalize it? The code change itself is already approved.

[rbeckmancostar]

Sorry, I'm stuck with my legal dept w.r.t. the CLA and I'm not sure how long it will be until I get that resolved; if anyone else can progress this without my contribution/commit/anything related to me, please do.

[github-actions]

This PR was marked stale due to lack of activity. It will be closed in 14 days.

[ralf0131]

We are facing the same issue as well, hopefully this can be fixed as soon as possible!