Upgrade elasticsearch-rest-client to 7.3.1

Also update the test container to use this version for V7_3 tests.

Change-Id: I2b1913f355101c10649477222beed84fccbc3961
1 file changed
tree: 32fd54c614442e170f3c8089f504220b954dea57
  1. gerrit-acceptance-tests/
  2. gerrit-elasticsearch/
  3. gerrit-pgm/