Update mysqld_exporter to v0.15.1

From grafana/mysqld_exporter branch `refactor_collector`, including
changes in prometheus/mysqld_exporter#774.

go.mod

@@ -157,7 +157,7 @@ require (
 	github.com/prometheus/common/sigv4 v0.1.0
 	github.com/prometheus/consul_exporter v0.8.0
 	github.com/prometheus/memcached_exporter v0.13.0
-	github.com/prometheus/mysqld_exporter v0.14.0
+	github.com/prometheus/mysqld_exporter v0.15.1
 	github.com/prometheus/node_exporter v1.6.0
 	github.com/prometheus/procfs v0.15.1
 	github.com/prometheus/prometheus v0.53.0 // a.k.a. v2.51.2
@@ -861,7 +861,7 @@ replace (
 	github.com/prometheus-community/postgres_exporter => github.com/grafana/postgres_exporter v0.15.1-0.20240417113938-9358270470dd
 
 	// TODO(marctc): remove once this PR is merged upstream: https://github.com/prometheus/mysqld_exporter/pull/774
-	github.com/prometheus/mysqld_exporter => github.com/grafana/mysqld_exporter v0.12.2-0.20231005125903-364b9c41e595
+	github.com/prometheus/mysqld_exporter => github.com/grafana/mysqld_exporter v0.15.1-0.20240909163808-dec628bde813
 
 	// TODO(marctc, mattdurham): Replace node_export with custom fork for multi usage. https://github.com/prometheus/node_exporter/pull/2812
 	github.com/prometheus/node_exporter => github.com/grafana/node_exporter v0.18.1-grafana-r01.0.20231004161416-702318429731

go.sum

@@ -1214,8 +1214,8 @@ github.com/grafana/loki/pkg/push v0.0.0-20240514112848-a1b1eeb09583 h1:dN3eF1S5f
 github.com/grafana/loki/pkg/push v0.0.0-20240514112848-a1b1eeb09583/go.mod h1:lJEF/Wh5MYlmBem6tOYAFObkLsuikfrEf8Iy9AdMPiQ=
 github.com/grafana/loki/v3 v3.0.0-20240513110952-8622293f23b1 h1:agFDevQdNVgJYIn5P3+u5oWG+CUnEAZHLZ9jABEXM+0=
 github.com/grafana/loki/v3 v3.0.0-20240513110952-8622293f23b1/go.mod h1:Fv4JImqGS4r+v36vJ4CP9yNM/Krj824Ull/nSuNdI9o=
-github.com/grafana/mysqld_exporter v0.12.2-0.20231005125903-364b9c41e595 h1:I9sRknI5ajd8whPOX0nBDXy5B6xUfhItClMy+6R4oqE=
-github.com/grafana/mysqld_exporter v0.12.2-0.20231005125903-364b9c41e595/go.mod h1:U8ifHC5pT2WuVTO7ki4KZmWLjfEKfktQiU3bh0J8scw=
+github.com/grafana/mysqld_exporter v0.15.1-0.20240909163808-dec628bde813 h1:JsRnDJyFYBsMRNPgPstuLj0XpVPEblOiQwg7hZKyXSQ=
+github.com/grafana/mysqld_exporter v0.15.1-0.20240909163808-dec628bde813/go.mod h1:KIy8sAnhB3hl0UBKYG6jsMDAEfxgGdmNivzV6J85Rig=
 github.com/grafana/node_exporter v0.18.1-grafana-r01.0.20231004161416-702318429731 h1:vyyIYY2sLpmgFIckJ1vSO/oYkvB0thDF6UiFYp5PThM=
 github.com/grafana/node_exporter v0.18.1-grafana-r01.0.20231004161416-702318429731/go.mod h1:vOZxEzxm0nZmuNqjtIfvtmvdRtJik9POmcN5mQVLf5E=
 github.com/grafana/opentelemetry-collector-contrib/receiver/prometheusreceiver v0.0.0-20240326165551-1ae1b9218b1b h1:o7tJxI3dVrIwZwNd7feiMNjYRnbMvyGCQtxJGgfORQQ=