Update Alertmanager to commit 66ec17e (#212)

This commit updates Alertmanager to include grafana/prometheus-alertmanager#89. It is a no-op. It just keeps us up to date.

go.mod

@@ -96,7 +96,7 @@ require (
 )
 
 // Using a fork of the Alertmanager with Alerting Squad specific changes.
-replace github.com/prometheus/alertmanager => github.com/grafana/prometheus-alertmanager v0.25.1-0.20240625182930-5c3512635dc5
+replace github.com/prometheus/alertmanager => github.com/grafana/prometheus-alertmanager v0.25.1-0.20240625192351-66ec17e3aa45
 
 replace github.com/Unknwon/com v1.0.1 => github.com/unknwon/com v1.0.1
 

go.sum

@@ -187,8 +187,8 @@ github.com/google/uuid v1.5.0 h1:1p67kYwdtXjb0gL0BPiP1Av9wiZPo5A8z2cWkTZ+eyU=
 github.com/google/uuid v1.5.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/googleapis/gax-go/v2 v2.0.4/go.mod h1:0Wqv26UfaUD9n4G6kQubkQ+KchISgw+vpHVxEJEs9eg=
 github.com/googleapis/gax-go/v2 v2.0.5/go.mod h1:DWXyrwAJ9X0FpwwEdw+IPEYBICEFu5mhpdKc/us6bOk=
-github.com/grafana/prometheus-alertmanager v0.25.1-0.20240625182930-5c3512635dc5 h1:RXspnl74gDuDorXvuXpLYyT8aVYJTalY05ZCnvETT0A=
-github.com/grafana/prometheus-alertmanager v0.25.1-0.20240625182930-5c3512635dc5/go.mod h1:01sXtHoRwI8W324IPAzuxDFOmALqYLCOhvSC2fUHWXc=
+github.com/grafana/prometheus-alertmanager v0.25.1-0.20240625192351-66ec17e3aa45 h1:AJKOtDKAOg8XNFnIZSmqqqutoTSxVlRs6vekL2p2KEY=
+github.com/grafana/prometheus-alertmanager v0.25.1-0.20240625192351-66ec17e3aa45/go.mod h1:01sXtHoRwI8W324IPAzuxDFOmALqYLCOhvSC2fUHWXc=
 github.com/hashicorp/errwrap v1.0.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=
 github.com/hashicorp/errwrap v1.1.0 h1:OxrOeh75EUXMY8TBjag2fzXGZ40LB6IKw45YeGUDY2I=
 github.com/hashicorp/errwrap v1.1.0/go.mod h1:YH+1FKiLXxHSkmPseP+kNlulaMuP3n2brvKWEqk/Jc4=