fix: Update ECP dependency to v0.2.3 (#1857)

Fixes logging behavior issue introduced in 0.2.1 where code paths outside of ECP were having logging suppressed when importing the client.

go.mod

@@ -6,7 +6,7 @@ require (
 	cloud.google.com/go/compute/metadata v0.2.3
 	github.com/google/go-cmp v0.5.9
 	github.com/google/uuid v1.3.0
-	github.com/googleapis/enterprise-certificate-proxy v0.2.2
+	github.com/googleapis/enterprise-certificate-proxy v0.2.3
 	github.com/googleapis/gax-go/v2 v2.7.0
 	go.opencensus.io v0.24.0
 	golang.org/x/net v0.0.0-20221014081412-f15817d10f9b

go.sum

@@ -44,8 +44,8 @@ github.com/google/go-cmp v0.5.9/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeN
 github.com/google/uuid v1.1.2/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
 github.com/google/uuid v1.3.0 h1:t6JiXgmwXMjEs8VusXIJk2BXHsn+wx8BZdTaoZ5fu7I=
 github.com/google/uuid v1.3.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
-github.com/googleapis/enterprise-certificate-proxy v0.2.2 h1:jUqbmxlR+gGPQq/uvQviKpS1bSQecfs2t7o6F14sk9s=
-github.com/googleapis/enterprise-certificate-proxy v0.2.2/go.mod h1:AwSRAtLfXpU5Nm3pW+v7rGDHp09LsPtGY9MduiEsR9k=
+github.com/googleapis/enterprise-certificate-proxy v0.2.3 h1:yk9/cqRKtT9wXZSsRH9aurXEpJX+U6FLtpYTdC3R06k=
+github.com/googleapis/enterprise-certificate-proxy v0.2.3/go.mod h1:AwSRAtLfXpU5Nm3pW+v7rGDHp09LsPtGY9MduiEsR9k=
 github.com/googleapis/gax-go/v2 v2.7.0 h1:IcsPKeInNvYi7eqSaDjiZqDDKu5rsmunY0Y1YupQSSQ=
 github.com/googleapis/gax-go/v2 v2.7.0/go.mod h1:TEop28CZZQ2y+c0VxMUmu1lV+fQx57QpBWsYpwqHJx8=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=