chore(deps): update github.com/grafana/regexp digest to a468a5b (#13805)

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

go.mod

@@ -381,7 +381,7 @@ exclude k8s.io/client-go v8.0.0+incompatible
 replace github.com/hashicorp/memberlist => github.com/grafana/memberlist v0.3.1-0.20220714140823-09ffed8adbbe
 
 // Insist on the optimised version of grafana/regexp
-replace github.com/grafana/regexp => github.com/grafana/regexp v0.0.0-20221122212121-6b5c0a4cb7fd
+replace github.com/grafana/regexp => github.com/grafana/regexp v0.0.0-20240518133315-a468a5bfb3bc
 
 replace github.com/grafana/loki/pkg/push => ./pkg/push
 

go.sum

@@ -1049,8 +1049,8 @@ github.com/grafana/memberlist v0.3.1-0.20220714140823-09ffed8adbbe h1:yIXAAbLswn
 github.com/grafana/memberlist v0.3.1-0.20220714140823-09ffed8adbbe/go.mod h1:MS2lj3INKhZjWNqd3N0m3J+Jxf3DAOnAH9VT3Sh9MUE=
 github.com/grafana/pyroscope-go/godeltaprof v0.1.6 h1:nEdZ8louGAplSvIJi1HVp7kWvFvdiiYg3COLlTwJiFo=
 github.com/grafana/pyroscope-go/godeltaprof v0.1.6/go.mod h1:Tk376Nbldo4Cha9RgiU7ik8WKFkNpfds98aUzS8omLE=
-github.com/grafana/regexp v0.0.0-20221122212121-6b5c0a4cb7fd h1:PpuIBO5P3e9hpqBD0O/HjhShYuM6XE0i/lbE6J94kww=
-github.com/grafana/regexp v0.0.0-20221122212121-6b5c0a4cb7fd/go.mod h1:M5qHK+eWfAv8VR/265dIuEpL3fNfeC21tXXp9itM24A=
+github.com/grafana/regexp v0.0.0-20240518133315-a468a5bfb3bc h1:GN2Lv3MGO7AS6PrRoT6yV5+wkrOpcszoIsO4+4ds248=
+github.com/grafana/regexp v0.0.0-20240518133315-a468a5bfb3bc/go.mod h1:+JKpmjMGhpgPL+rXZ5nsZieVzvarn86asRlBg4uNGnk=
 github.com/grafana/tail v0.0.0-20230510142333-77b18831edf0 h1:bjh0PVYSVVFxzINqPFYJmAmJNrWPgnVjuSdYJGHmtFU=
 github.com/grafana/tail v0.0.0-20230510142333-77b18831edf0/go.mod h1:7t5XR+2IA8P2qggOAHTj/GCZfoLBle3OvNSYh1VkRBU=
 github.com/gregjones/httpcache v0.0.0-20170728041850-787624de3eb7/go.mod h1:FecbI9+v66THATjSRHfNgh1IVFe/9kFxbXtjV0ctIMA=