chore: add warning for user agent parser

[jkroepke]

What this PR does / why we need it

Which issue this PR fixes

(optional, in fixes #<issue number>(, fixes #<issue_number>, ...) format, will close that issue when PR gets merged): fixes #

• fixes #

Special notes for your reviewer

Particularly user-facing changes

Checklist

Complete these before marking the PR as ready to review:

• DCO signed
• The PR title has a summary of the changes
• The PR body has a summary to reflect any significant (and particularly user-facing) changes introduced by this PR

[codecov]

Codecov Report

❌ Patch coverage is 63.81579% with 55 lines in your changes missing coverage. Please review.
✅ Project coverage is 77.61%. Comparing base (96cb759) to head (930b449).
⚠️ Report is 1 commits behind head on main.

Files with missing lines	Patch %	Lines
internal/syslog/syslog.go	68.33%	14 Missing and 5 partials ⚠️
cmd/access-log-exporter/main.go	55.55%	13 Missing and 3 partials ⚠️
internal/collector/line.go	52.00%	9 Missing and 3 partials ⚠️
internal/collector/collector.go	57.14%	4 Missing and 2 partials ⚠️
internal/metric/metric.go	84.61%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #13      +/-   ##
==========================================
+ Coverage   73.69%   77.61%   +3.91%     
==========================================
  Files          11       12       +1     
  Lines         844      880      +36     
==========================================
+ Hits          622      683      +61     
+ Misses        179      152      -27     
- Partials       43       45       +2     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.

[Copilot]

Copilot encountered an error and was unable to review this pull request. You can try again by re-requesting a review.