* Update CI workflows to include more Python and OpenSearch versions and run faster. Signed-off-by: Yury-Fridlyand <[email protected]> * Fix CI workflows. Signed-off-by: Yury-Fridlyand <[email protected]> * Add `OPENSEARCH_VERSION` variable. Signed-off-by: Yury-Fridlyand <[email protected]> * Set `OPENSEARCH_VERSION` to constant. Signed-off-by: Yury-Fridlyand <[email protected]> * CHANGELOG.md Signed-off-by: Yury-Fridlyand <[email protected]> * Add 2.6.0 version to test matrix. Signed-off-by: Yury-Fridlyand <[email protected]> --------- Signed-off-by: Yury-Fridlyand <[email protected]> Co-authored-by: Daniel (dB.) Doubrovkine <[email protected]>