[Backport 2.x] Disable Code Coverage for Windows and Mac Platforms

[opensearch-trigger-bot]

Backport d3f8959 from #603

[codecov-commenter]

Codecov Report

Merging #604 (d3f8959) into 2.x (0eece60) will decrease coverage by 0.03%.
The diff coverage is 85.67%.

❗ Current head d3f8959 differs from pull request most recent head 84c492f. Consider uploading reports for the commit 84c492f to get more accurate results

@@             Coverage Diff              @@
##                2.x     #604      +/-   ##
============================================
- Coverage     84.51%   84.47%   -0.04%     
+ Complexity     1054     1050       -4     
============================================
  Files           149      149              
  Lines          4301     4291      -10     
  Branches        382      379       -3     
============================================
- Hits           3635     3625      -10     
  Misses          489      489              
  Partials        177      177              

Impacted Files	Coverage Δ
...n/java/org/opensearch/knn/common/KNNConstants.java	93.33% <ø> (ø)
.../main/java/org/opensearch/knn/index/IndexUtil.java	55.73% <ø> (ø)
...va/org/opensearch/knn/index/KNNCircuitBreaker.java	60.00% <0.00%> (ø)
.../main/java/org/opensearch/knn/index/KNNMethod.java	100.00% <ø> (ø)
...ava/org/opensearch/knn/index/KNNMethodContext.java	92.50% <ø> (ø)
...java/org/opensearch/knn/index/MethodComponent.java	88.88% <ø> (ø)
...g/opensearch/knn/index/MethodComponentContext.java	91.13% <ø> (ø)
...earch/knn/index/memory/NativeMemoryAllocation.java	82.92% <ø> (ø)
.../java/org/opensearch/knn/index/query/KNNQuery.java	83.33% <ø> (ø)
...org/opensearch/knn/index/query/KNNQueryResult.java	100.00% <ø> (ø)
... and 84 more

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[vamshin]

LGTM! Thanks