chore(deps): update otel/opentelemetry-collector-contrib docker tag to v0.138.0

[renovate]

This PR contains the following updates:

Package	Update	Change
otel/opentelemetry-collector-contrib	minor	0.137.0 -> 0.138.0

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Release Notes

open-telemetry/opentelemetry-collector-releases (otel/opentelemetry-collector-contrib)

v0.138.0

Compare Source

🚀 New components 🚀

• unrollprocessor: Adds the unroll processor to the Contrib distribution (#​1189)

💡 Enhancements 💡

• packaging: Allow in-place upgrades for Windows MSI installations (#​1197)

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Configuration

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♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 90.16%. Comparing base (d98302b) to head (ce8871e).
⚠️ Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main    #7773   +/-   ##
=========================================
  Coverage     90.16%   90.16%           
  Complexity     7189     7189           
=========================================
  Files           814      814           
  Lines         21730    21730           
  Branches       2129     2129           
=========================================
  Hits          19592    19592           
  Misses         1469     1469           
  Partials        669      669           

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