Update module github.com/slack-go/slack to v0.17.3

Author: renovate[bot]

go.mod

@@ -1,12 +1,15 @@
 module github.com/drone-plugins/drone-slack
 
-go 1.20
+go 1.22
+
+toolchain go1.24.4
 
 require (
 	github.com/drone/drone-template-lib v1.0.0
 	github.com/go-git/go-git/v5 v5.12.0
+	github.com/google/go-cmp v0.6.0
 	github.com/joho/godotenv v1.5.1
-	github.com/slack-go/slack v0.15.0
+	github.com/slack-go/slack v0.17.3
 	github.com/urfave/cli v1.22.14
 	gotest.tools/v3 v3.5.1
 )
@@ -26,7 +29,6 @@ require (
 	github.com/go-git/gcfg v1.5.1-0.20230307220236-3a3c6141e376 // indirect
 	github.com/go-git/go-billy/v5 v5.5.0 // indirect
 	github.com/golang/groupcache v0.0.0-20210331224755-41bb18bfe9da // indirect
-	github.com/google/go-cmp v0.6.0 // indirect
 	github.com/google/uuid v1.1.0 // indirect
 	github.com/gorilla/websocket v1.5.3 // indirect
 	github.com/huandu/xstrings v1.2.0 // indirect

go.sum

@@ -87,6 +87,8 @@ github.com/skeema/knownhosts v1.2.2 h1:Iug2P4fLmDw9f41PB6thxUkNUkJzB5i+1/exaj40L
 github.com/skeema/knownhosts v1.2.2/go.mod h1:xYbVRSPxqBZFrdmDyMmsOs+uX1UZC3nTN3ThzgDxUwo=
 github.com/slack-go/slack v0.15.0 h1:LE2lj2y9vqqiOf+qIIy0GvEoxgF1N5yLGZffmEZykt0=
 github.com/slack-go/slack v0.15.0/go.mod h1:hlGi5oXA+Gt+yWTPP0plCdRKmjsDxecdHxYQdlMQKOw=
+github.com/slack-go/slack v0.17.3 h1:zV5qO3Q+WJAQ/XwbGfNFrRMaJ5T/naqaonyPV/1TP4g=
+github.com/slack-go/slack v0.17.3/go.mod h1:X+UqOufi3LYQHDnMG1vxf0J8asC6+WllXrVrhl8/Prk=
 github.com/stretchr/objx v0.1.0/go.mod h1:HFkY916IF+rwdDfMAkV7OtwuqBVzrE8GR6GFx+wExME=
 github.com/stretchr/objx v0.4.0/go.mod h1:YvHI0jy2hoMjB+UWwv71VJQ9isScKT/TqJzVSSt89Yw=
 github.com/stretchr/objx v0.5.0/go.mod h1:Yh+to48EsGEfYuaHDzXPcE3xhTkx73EhmCGUpEOglKo=