Update module github.com/prometheus/client_golang to v1.20.5

| datasource | package                             | from    | to      |
| ---------- | ----------------------------------- | ------- | ------- |
| go         | github.com/prometheus/client_golang | v1.20.4 | v1.20.5 |


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

go.mod

@@ -5,7 +5,7 @@ go 1.22.6
 require (
 	github.com/alecthomas/kingpin/v2 v2.4.0
 	github.com/nginxinc/nginx-plus-go-client/v2 v2.0.1
-	github.com/prometheus/client_golang v1.20.4
+	github.com/prometheus/client_golang v1.20.5
 	github.com/prometheus/common v0.60.0
 	github.com/prometheus/exporter-toolkit v0.13.0
 )

go.sum

@@ -36,8 +36,8 @@ github.com/nginxinc/nginx-plus-go-client/v2 v2.0.1 h1:5VVK38bnELMDWnwfF6dSv57Res
 github.com/nginxinc/nginx-plus-go-client/v2 v2.0.1/go.mod h1:He+1izxYxVVO5/C9ZTukwOpvkAx5eS19nRQgKXDhX5I=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
-github.com/prometheus/client_golang v1.20.4 h1:Tgh3Yr67PaOv/uTqloMsCEdeuFTatm5zIq5+qNN23vI=
-github.com/prometheus/client_golang v1.20.4/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
+github.com/prometheus/client_golang v1.20.5 h1:cxppBPuYhUnsO6yo/aoRol4L7q7UFfdm+bR9r+8l63Y=
+github.com/prometheus/client_golang v1.20.5/go.mod h1:PIEt8X02hGcP8JWbeHyeZ53Y/jReSnHgO035n//V5WE=
 github.com/prometheus/client_model v0.6.1 h1:ZKSh/rekM+n3CeS952MLRAdFwIKqeY8b62p8ais2e9E=
 github.com/prometheus/client_model v0.6.1/go.mod h1:OrxVMOVHjw3lKMa8+x6HeMGkHMQyHDk9E3jmP2AmGiY=
 github.com/prometheus/common v0.60.0 h1:+V9PAREWNvJMAuJ1x1BaWl9dewMW4YrHZQbx0sJNllA=