build(deps): bump github.com/elastic/elastic-agent-libs

Bumps [github.com/elastic/elastic-agent-libs](https://github.com/elastic/elastic-agent-libs) from 0.21.4 to 0.21.6.
- [Release notes](https://github.com/elastic/elastic-agent-libs/releases)
- [Commits](elastic/elastic-agent-libs@v0.21.4...v0.21.6)

---
updated-dependencies:
- dependency-name: github.com/elastic/elastic-agent-libs
  dependency-version: 0.21.6
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

go.mod

@@ -8,7 +8,7 @@ require (
 	github.com/dgraph-io/ristretto v0.2.0
 	github.com/docker/go-units v0.5.0
 	github.com/elastic/elastic-agent-client/v7 v7.17.2
-	github.com/elastic/elastic-agent-libs v0.21.4
+	github.com/elastic/elastic-agent-libs v0.21.6
 	github.com/elastic/elastic-agent-system-metrics v0.11.18
 	github.com/elastic/go-elasticsearch/v8 v8.19.0
 	github.com/elastic/go-ucfg v0.8.8

go.sum

@@ -35,8 +35,8 @@ github.com/dustin/go-humanize v1.0.1 h1:GzkhY7T5VNhEkwH0PVJgjz+fX1rhBrR7pRT3mDkp
 github.com/dustin/go-humanize v1.0.1/go.mod h1:Mu1zIs6XwVuF/gI1OepvI0qD18qycQx+mFykh5fBlto=
 github.com/elastic/elastic-agent-client/v7 v7.17.2 h1:Cl2TeABqWZgW40t5fchGWT/sRk4MDDLWA0d8iHHOxLA=
 github.com/elastic/elastic-agent-client/v7 v7.17.2/go.mod h1:5irRFqp6HLqtu1S+OeY0jg8x7K6PLL+DW+PwVk1vJnk=
-github.com/elastic/elastic-agent-libs v0.21.4 h1:Xf7zeJ2hiyt13VRhyH22/nsDmlY8/TEfFb36X9uvw34=
-github.com/elastic/elastic-agent-libs v0.21.4/go.mod h1:xSeIP3NtOIT4N2pPS4EyURmS1Q8mK0lWZ8Wd1Du6q3w=
+github.com/elastic/elastic-agent-libs v0.21.6 h1:hvBAi4KHaYf4hn+rTc9m6A35eZjqb1uoE2exklIdWm0=
+github.com/elastic/elastic-agent-libs v0.21.6/go.mod h1:xSeIP3NtOIT4N2pPS4EyURmS1Q8mK0lWZ8Wd1Du6q3w=
 github.com/elastic/elastic-agent-system-metrics v0.11.18 h1:MuFLvHc3kQN/59+3KmRWhOUoXkL5PDzxEbdYbARGexA=
 github.com/elastic/elastic-agent-system-metrics v0.11.18/go.mod h1:qiZC5p1hd8te4XVnhh7FkXdcYhxFnl5i9GJpROtf6zo=
 github.com/elastic/elastic-transport-go/v8 v8.7.0 h1:OgTneVuXP2uip4BA658Xi6Hfw+PeIOod2rY3GVMGoVE=