fix(deps): update module github.com/mailgun/mailgun-go/v4 to v4.20.6 (n…

…ikoksr#917)

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

go.mod

@@ -19,7 +19,7 @@ require (
 	github.com/dghubble/oauth1 v0.7.3
 	github.com/go-telegram-bot-api/telegram-bot-api v4.6.4+incompatible
 	github.com/line/line-bot-sdk-go v7.8.0+incompatible
-	github.com/mailgun/mailgun-go/v4 v4.20.5
+	github.com/mailgun/mailgun-go/v4 v4.20.6
 	github.com/plivo/plivo-go/v7 v7.57.0
 	github.com/sendgrid/sendgrid-go v3.16.0+incompatible
 	github.com/silenceper/wechat/v2 v2.1.7

go.sum

@@ -257,8 +257,8 @@ github.com/line/line-bot-sdk-go v7.8.0+incompatible h1:Uf9/OxV0zCVfqyvwZPH8CrdiH
 github.com/line/line-bot-sdk-go v7.8.0+incompatible/go.mod h1:0RjLjJEAU/3GIcHkC3av6O4jInAbt25nnZVmOFUgDBg=
 github.com/mailgun/errors v0.4.0 h1:6LFBvod6VIW83CMIOT9sYNp28TCX0NejFPP4dSX++i8=
 github.com/mailgun/errors v0.4.0/go.mod h1:xGBaaKdEdQT0/FhwvoXv4oBaqqmVZz9P1XEnvD/onc0=
-github.com/mailgun/mailgun-go/v4 v4.20.5 h1:X0n0faLwHy8iQmCVrzOmJAwsAEGjvtcCu38patBUfbc=
-github.com/mailgun/mailgun-go/v4 v4.20.5/go.mod h1:768NjUvsxW8Ga8fHIPITmr5f/U8qmnQqnZ3/cs3StUc=
+github.com/mailgun/mailgun-go/v4 v4.20.6 h1:6VUkPQ+hkxKj/y9vH+vk1w+wHRy9+vnK5vQUHh9teUw=
+github.com/mailgun/mailgun-go/v4 v4.20.6/go.mod h1:768NjUvsxW8Ga8fHIPITmr5f/U8qmnQqnZ3/cs3StUc=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
 github.com/mattn/go-colorable v0.1.13/go.mod h1:7S9/ev0klgBDR4GtXTXX8a3vIGJpMovkB8vQcUbaXHg=
 github.com/mattn/go-isatty v0.0.16/go.mod h1:kYGgaQfpe5nmfYZH+SKPsOc2e4SrIfOl2e/yFXSvRLM=