[AIRFLOW-6767] Correct name for default Athena workgroup

[bhavika]

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Issue link: AIRFLOW-6767

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[codecov-io]

Codecov Report

Merging #7394 into master will decrease coverage by 0.17%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #7394      +/-   ##
==========================================
- Coverage    86.3%   86.12%   -0.18%     
==========================================
  Files         871      871              
  Lines       40660    40660              
==========================================
- Hits        35091    35020      -71     
- Misses       5569     5640      +71

Impacted Files	Coverage Δ
airflow/providers/amazon/aws/hooks/athena.py	67.18% <ø> (ø)	⬆️
airflow/providers/amazon/aws/operators/athena.py	74.5% <ø> (ø)	⬆️
...w/providers/apache/hive/operators/mysql_to_hive.py	35.84% <0%> (-64.16%)	⬇️
airflow/security/kerberos.py	30.43% <0%> (-45.66%)	⬇️
airflow/providers/mysql/operators/mysql.py	55% <0%> (-45%)	⬇️
airflow/providers/apache/hive/hooks/hive.py	76.02% <0%> (-1.54%)	⬇️
airflow/hooks/dbapi_hook.py	90.9% <0%> (-0.83%)	⬇️
airflow/jobs/scheduler_job.py	89.19% <0%> (-0.15%)	⬇️
airflow/utils/dag_processing.py	88.12% <0%> (+0.19%)	⬆️

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[bhavika]

👋 I'm not entirely sure how CodeCov does this but I haven't reduced the scope of any tests or deleted them so the reduction in coverage is probably due to something else.