chore(deps): bump github.com/knadh/koanf/v2 from 2.3.3 to 2.3.4

Bumps [github.com/knadh/koanf/v2](https://github.com/knadh/koanf) from 2.3.3 to 2.3.4.
- [Release notes](https://github.com/knadh/koanf/releases)
- [Commits](knadh/koanf@v2.3.3...v2.3.4)

---
updated-dependencies:
- dependency-name: github.com/knadh/koanf/v2
  dependency-version: 2.3.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

go.mod

@@ -5,7 +5,7 @@ go 1.26
 require (
 	github.com/eclipse/paho.mqtt.golang v1.5.1
 	github.com/knadh/koanf v1.5.0
-	github.com/knadh/koanf/v2 v2.3.3
+	github.com/knadh/koanf/v2 v2.3.4
 	github.com/prometheus/client_golang v1.23.2
 	github.com/spf13/cobra v1.10.2
 	github.com/tidwall/pretty v1.2.1