build(deps): bump github.com/alecthomas/kingpin/v2 from 2.3.2 to 2.4.0

Bumps [github.com/alecthomas/kingpin/v2](https://github.com/alecthomas/kingpin) from 2.3.2 to 2.4.0.
- [Release notes](https://github.com/alecthomas/kingpin/releases)
- [Commits](alecthomas/kingpin@v2.3.2...v2.4.0)

---
updated-dependencies:
- dependency-name: github.com/alecthomas/kingpin/v2
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -3,7 +3,7 @@ module github.com/prometheus/node_exporter
 go 1.20
 
 require (
-	github.com/alecthomas/kingpin/v2 v2.3.2
+	github.com/alecthomas/kingpin/v2 v2.4.0
 	github.com/beevik/ntp v1.3.0
 	github.com/coreos/go-systemd/v22 v22.5.0
 	github.com/dennwc/btrfs v0.0.0-20230312211831-a1f570bd01a1

go.sum

@@ -1,5 +1,5 @@
-github.com/alecthomas/kingpin/v2 v2.3.2 h1:H0aULhgmSzN8xQ3nX1uxtdlTHYoPLu5AhHxWrKI6ocU=
-github.com/alecthomas/kingpin/v2 v2.3.2/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
+github.com/alecthomas/kingpin/v2 v2.4.0 h1:f48lwail6p8zpO1bC4TxtqACaGqHYA22qkHjHpqDjYY=
+github.com/alecthomas/kingpin/v2 v2.4.0/go.mod h1:0gyi0zQnjuFk8xrkNKamJoyUo382HRL7ATRpFZCw6tE=
 github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137 h1:s6gZFSlWYmbqAuRjVTiNNhvNRfY2Wxp9nhfyel4rklc=
 github.com/alecthomas/units v0.0.0-20211218093645-b94a6e3cc137/go.mod h1:OMCwj8VM1Kc9e19TLln2VL61YJF0x1XFtfdL4JdbSyE=
 github.com/beevik/ntp v1.3.0 h1:/w5VhpW5BGKS37vFm1p9oVk/t4HnnkKZAZIubHM6F7Q=