Replcaing cancel-workflow-runs with concurrency

[chethanuk]

Description

Github actions introduced the option to limit workflow run or job concurrency

So just moving to the official concurrency
More at https://github.blog/changelog/2021-04-19-github-actions-limit-workflow-run-or-job-concurrency/

[codecov-commenter]

Codecov Report

Merging #6984 (03ceee2) into master (b8a92c4) will decrease coverage by 7.85%.
The diff coverage is n/a.

@@             Coverage Diff              @@
##             master    #6984      +/-   ##
============================================
- Coverage     73.42%   65.56%   -7.86%     
  Complexity       12       12              
============================================
  Files          1441     1441              
  Lines         71431    71431              
  Branches      10351    10351              
============================================
- Hits          52446    46832    -5614     
- Misses        15464    21211    +5747     
+ Partials       3521     3388     -133     

Flag	Coverage Δ
integration	?
unittests	65.56% <ø> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
...a/org/apache/pinot/minion/metrics/MinionMeter.java	0.00% <0.00%> (-100.00%)	⬇️
.../apache/pinot/common/metrics/BrokerQueryPhase.java	0.00% <0.00%> (-100.00%)	⬇️
.../apache/pinot/minion/metrics/MinionQueryPhase.java	0.00% <0.00%> (-100.00%)	⬇️
...pache/pinot/common/utils/grpc/GrpcQueryClient.java	0.00% <0.00%> (-100.00%)	⬇️
...pinot/minion/exception/TaskCancelledException.java	0.00% <0.00%> (-100.00%)	⬇️
...t/core/startree/plan/StarTreeDocIdSetPlanNode.java	0.00% <0.00%> (-100.00%)	⬇️
.../core/startree/plan/StarTreeTransformPlanNode.java	0.00% <0.00%> (-100.00%)	⬇️
...core/startree/plan/StarTreeProjectionPlanNode.java	0.00% <0.00%> (-100.00%)	⬇️
...t/minion/executor/MinionTaskZkMetadataManager.java	0.00% <0.00%> (-100.00%)	⬇️
...startree/executor/StarTreeAggregationExecutor.java	0.00% <0.00%> (-100.00%)	⬇️
... and 335 more

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