Dependency updates. (#14033)

* Update dependencies.

* Fix tests.

vendor/github.com/olivere/elastic/CONTRIBUTORS

@@ -17,6 +17,7 @@ Alex [@akotlar](https://github.com/akotlar)
 Alexander Sack [@asac](https://github.com/asac)
 Alexandre Olivier [@aliphen](https://github.com/aliphen)
 Alexey Sharov [@nizsheanez](https://github.com/nizsheanez)
+Aman Jain [@amanjain97](https://github.com/amanjain97)
 Anders [@ANerd](https://github.com/ANerd)
 AndreKR [@AndreKR](https://github.com/AndreKR)
 André Bierlein [@ligustah](https://github.com/ligustah)