Removing references for 2.20.0 as we not planning to release it

[expani]

Related Issues

Resolves (#17585)

[expani]

Still wrapping my head around the changes required for @mch2 comment on minimum_wire_compatibility_version

Might include it here later.

cc: @peterzhuamazon @andrross

[github-actions]

✅ Gradle check result for 637fc25: SUCCESS

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 72.54%. Comparing base (e27cf58) to head (637fc25).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##               main   #17605   +/-   ##
=========================================
  Coverage     72.53%   72.54%           
+ Complexity    65814    65747   -67     
=========================================
  Files          5311     5311           
  Lines        304945   304944    -1     
  Branches      44226    44226           
=========================================
+ Hits         221193   221219   +26     
+ Misses        65619    65599   -20     
+ Partials      18133    18126    -7     

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[andrross]

Still wrapping my head around the changes required for @mch2 comment on minimum_wire_compatibility_version

@expani I believe this is sufficient. Running the server with this commit produces this output:

$ curl localhost:9200
{
  "name" : "runTask-0",
  "cluster_name" : "runTask",
  "cluster_uuid" : "iQSI0XjdRryROsQPd8CDsg",
  "version" : {
    "distribution" : "opensearch",
    "number" : "3.0.0-SNAPSHOT",
    "build_type" : "tar",
    "build_hash" : "637fc25408e167cf78ad523ad87fb55e0b6fdf02",
    "build_date" : "2025-03-17T15:14:19.331696Z",
    "build_snapshot" : true,
    "lucene_version" : "10.1.0",
    "minimum_wire_compatibility_version" : "2.19.0",
    "minimum_index_compatibility_version" : "2.0.0"
  },
  "tagline" : "The OpenSearch Project: https://opensearch.org/"
}

And if you dig through the full gradle check output you can see it is running the tests against 2.19.2.

/cc @mch2