Move to pimpmychangelog to dev group

[TonyCTHsu]

What does this PR do?

Move pimpmychangelog to dev group

Motivation:

I want to see https://github.com/DataDog/dd-trace-rb/actions/workflows/cache-cleanup.yml job cleanup cache after this PR merged, because this branch changes the lockfile and dependencies

Change log entry
None

[github-actions]

Thank you for updating Change log entry section 👏

^{Visited at: 2025-02-13 21:07:54 UTC}

[pr-commenter]

Benchmarks

Benchmark execution time: 2025-02-13 21:18:57

Comparing candidate commit 45c4291 in PR branch tonycthsu/move-pimpmychangelog with baseline commit 8b8a31d in branch master.

Found 0 performance improvements and 2 performance regressions! Performance is the same for 29 metrics, 2 unstable metrics.

scenario:tracing - Propagation - Datadog

• 🟥 throughput [-2980.573op/s; -2902.514op/s] or [-9.023%; -8.787%]

scenario:tracing - Tracing.log_correlation

• 🟥 throughput [-8286.436op/s; -7910.471op/s] or [-7.005%; -6.687%]

[datadog-datadog-prod-us1]

Datadog Report

Branch report: tonycthsu/move-pimpmychangelog
Commit report: 45c4291
Test service: dd-trace-rb

✅ 0 Failed, 20098 Passed, 1364 Skipped, 3m 13.45s Total Time

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.69%. Comparing base (8b8a31d) to head (45c4291).

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #4385   +/-   ##
=======================================
  Coverage   97.69%   97.69%           
=======================================
  Files        1352     1352           
  Lines       82735    82734    -1     
  Branches     4200     4200           
=======================================
  Hits        80825    80825           
+ Misses       1910     1909    -1     

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