build(deps): bump github.com/elastic/go-elasticsearch/v8

Bumps [github.com/elastic/go-elasticsearch/v8](https://github.com/elastic/go-elasticsearch) from 8.14.0 to 8.15.0.
- [Release notes](https://github.com/elastic/go-elasticsearch/releases)
- [Changelog](https://github.com/elastic/go-elasticsearch/blob/main/CHANGELOG.md)
- [Commits](elastic/go-elasticsearch@v8.14.0...v8.15.0)

---
updated-dependencies:
- dependency-name: github.com/elastic/go-elasticsearch/v8
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

go.mod

@@ -14,7 +14,7 @@ require (
 	github.com/elastic/elastic-agent-system-metrics v0.11.2
 	github.com/elastic/gmux v0.3.2
 	github.com/elastic/go-docappender/v2 v2.3.0
-	github.com/elastic/go-elasticsearch/v8 v8.14.0
+	github.com/elastic/go-elasticsearch/v8 v8.15.0
 	github.com/elastic/go-sysinfo v1.14.1
 	github.com/elastic/go-ucfg v0.8.8
 	github.com/go-sourcemap/sourcemap v2.1.4+incompatible

go.sum

@@ -149,8 +149,8 @@ github.com/elastic/gmux v0.3.2 h1:cb721R+fe/rt/jVNyBP5HDQsEwLD2wSKfPD2Sk6adDk=
 github.com/elastic/gmux v0.3.2/go.mod h1:OD6oYrno+SV3pyl1ArdWCjlExZ+FJOfoSaFqnFeldBQ=
 github.com/elastic/go-docappender/v2 v2.3.0 h1:Vr+l36jM+sE/LHp0JFxSIbHlWTSk8CpBblYWZZ/I1KA=
 github.com/elastic/go-docappender/v2 v2.3.0/go.mod h1:VNWgXUE9HX1G6W6ON8dOs/KdH8aCxXir/fxxcfrnov4=
-github.com/elastic/go-elasticsearch/v8 v8.14.0 h1:1ywU8WFReLLcxE1WJqii3hTtbPUE2hc38ZK/j4mMFow=
-github.com/elastic/go-elasticsearch/v8 v8.14.0/go.mod h1:WRvnlGkSuZyp83M2U8El/LGXpCjYLrvlkSgkAH4O5I4=
+github.com/elastic/go-elasticsearch/v8 v8.15.0 h1:IZyJhe7t7WI3NEFdcHnf6IJXqpRf+8S8QWLtZYYyBYk=
+github.com/elastic/go-elasticsearch/v8 v8.15.0/go.mod h1:HCON3zj4btpqs2N1jjsAy4a/fiAul+YBP00mBH4xik8=
 github.com/elastic/go-lumber v0.1.2-0.20220819171948-335fde24ea0f h1:TsPpU5EAwlt7YZoupKlxZ093qTZYdGou3EhfTF1U0B4=
 github.com/elastic/go-lumber v0.1.2-0.20220819171948-335fde24ea0f/go.mod h1:HHaWnZamYKWsR9/eZNHqRHob8iQDKnchHmmskT/SKko=
 github.com/elastic/go-structform v0.0.10 h1:oy08o/Ih2hHTkNcRY/1HhaYvIp5z6t8si8gnCJPDo1w=