[Backport 2.10] Add license for commons-lang3

[opensearch-trigger-bot[bot]]

Backport 40317713532c4facbb9c82801fa5ede1eb6a44cd from #535

[codecov[bot]]

Codecov Report

Merging #536 (1dfda30) into 2.10 (08f7665) will increase coverage by 0.08%. The diff coverage is n/a.

:exclamation: Current head 1dfda30 differs from pull request most recent head b88169a. Consider uploading reports for the commit b88169a to get more accurate results

@@             Coverage Diff              @@
##               2.10     #536      +/-   ##
============================================
+ Coverage     73.56%   73.65%   +0.08%     
- Complexity      374      375       +1     
============================================
  Files            44       44              
  Lines          2482     2482              
  Branches        172      172              
============================================
+ Hits           1826     1828       +2     
+ Misses          547      545       -2     
  Partials        109      109              

see 1 file with indirect coverage changes

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