Move appraisal gem to dev group

[TonyCTHsu]

Motivation:

Reduce gemfile size

What does this PR do?

1. Move appraisal gem to dev group to be removed from testing dependencies
2. Remove obsolete Appraisals and rake tasks

Change log entry

None

[pr-commenter]

Benchmarks

Benchmark execution time: 2024-12-06 15:48:21

Comparing candidate commit ed76dcb in PR branch tonycthsu/appraisal-reduce with baseline commit 507fe0a in branch master.

Found 0 performance improvements and 0 performance regressions! Performance is the same for 31 metrics, 2 unstable metrics.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.76%. Comparing base (507fe0a) to head (ed76dcb).
Report is 2 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #4200      +/-   ##
==========================================
- Coverage   97.77%   97.76%   -0.01%     
==========================================
  Files        1357     1357              
  Lines       81940    81940              
  Branches     4168     4168              
==========================================
- Hits        80114    80110       -4     
- Misses       1826     1830       +4     

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[Strech]

More 🟥 than 🟢
Awesome 👏🏼