Bump go.uber.org/zap in /extension/observer/k8sobserver

Bumps [go.uber.org/zap](https://github.com/uber-go/zap) from 1.25.0 to 1.26.0.
- [Release notes](https://github.com/uber-go/zap/releases)
- [Changelog](https://github.com/uber-go/zap/blob/master/CHANGELOG.md)
- [Commits](uber-go/zap@v1.25.0...v1.26.0)

---
updated-dependencies:
- dependency-name: go.uber.org/zap
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

extension/observer/k8sobserver/go.mod

@@ -9,7 +9,7 @@ require (
 	go.opentelemetry.io/collector/component v0.85.0
 	go.opentelemetry.io/collector/confmap v0.85.0
 	go.opentelemetry.io/collector/extension v0.85.0
-	go.uber.org/zap v1.25.0
+	go.uber.org/zap v1.26.0
 	k8s.io/api v0.28.1
 	k8s.io/apimachinery v0.28.1
 	k8s.io/client-go v0.28.1