chore(deps): upgrade elasticsearch to 7.16.3...

[cmark]

...and log4j2 to 2.17.1

Related issue: #964

[codecov-commenter]

Codecov Report

Merging #956 (351ff71) into 8.x (765c164) will increase coverage by 0.00%.
The diff coverage is n/a.

@@            Coverage Diff            @@
##                8.x     #956   +/-   ##
=========================================
  Coverage     64.47%   64.48%           
- Complexity    11765    11766    +1     
=========================================
  Files          1688     1688           
  Lines         55303    55303           
  Branches       5111     5111           
=========================================
+ Hits          35657    35661    +4     
+ Misses        17463    17460    -3     
+ Partials       2183     2182    -1     

Impacted Files	Coverage Δ
...national/index/revision/BaseRevisionBranching.java	89.47% <0.00%> (-1.17%)	⬇️
...ernational/snowowl/internal/eventbus/EventBus.java	68.31% <0.00%> (+0.49%)	⬆️
.../snomed/core/ecl/SnomedEclRefinementEvaluator.java	86.21% <0.00%> (+0.54%)	⬆️
...index/src/com/b2international/index/es/EsNode.java	82.29% <0.00%> (+1.04%)	⬆️
...nternational/snowowl/core/events/util/Promise.java	75.00% <0.00%> (+1.78%)	⬆️

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[apeteri]

👍

[nagyo]

LGTM!