Update dependency go to v1.24.2 (#1032)

| datasource     | package | from   | to     |
| -------------- | ------- | ------ | ------ |
| golang-version | go      | 1.24.1 | 1.24.2 |

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

go.mod

@@ -2,7 +2,7 @@ module github.com/nginx/nginx-prometheus-exporter
 
 go 1.23.0
 
-toolchain go1.24.1
+toolchain go1.24.2
 
 require (
 	github.com/alecthomas/kingpin/v2 v2.4.0