Bump github.com/mrz1836/postmark from 1.6.0 to 1.6.1

Bumps [github.com/mrz1836/postmark](https://github.com/mrz1836/postmark) from 1.6.0 to 1.6.1.
- [Release notes](https://github.com/mrz1836/postmark/releases)
- [Changelog](https://github.com/mrz1836/postmark/blob/master/.goreleaser.yml)
- [Commits](mrz1836/postmark@v1.6.0...v1.6.1)

---
updated-dependencies:
- dependency-name: github.com/mrz1836/postmark
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

go.mod

@@ -7,7 +7,7 @@ require (
 	github.com/domodwyer/mailyak v3.1.1+incompatible
 	github.com/mattbaird/gochimp v0.0.0-20200820164431-f1082bcdf63f
 	github.com/mrz1836/go-ses v0.2.0
-	github.com/mrz1836/postmark v1.6.0
+	github.com/mrz1836/postmark v1.6.1
 )
 
 require (

go.sum

@@ -21,8 +21,8 @@ github.com/mattbaird/gochimp v0.0.0-20200820164431-f1082bcdf63f h1:Sbn1gG/7kAsH2
 github.com/mattbaird/gochimp v0.0.0-20200820164431-f1082bcdf63f/go.mod h1:UaYd2gciRA1AoYEN6S+EiSNFK/0XHj9e1Wgloicgh6s=
 github.com/mrz1836/go-ses v0.2.0 h1:+OfKaWsjDo6Llfa8r+QgtU3BBBKzJervzYWN+ZkERlE=
 github.com/mrz1836/go-ses v0.2.0/go.mod h1:2QVXJwRfjzT+7rKZKuwXJF+q3eAaVH61Hs7yLzwGeeE=
-github.com/mrz1836/postmark v1.6.0 h1:AHo9Flg7WXT+XL2/9qdxz4qil9LgawWaJK+qTCf/fSI=
-github.com/mrz1836/postmark v1.6.0/go.mod h1:6z5MxAH00Kj44owtQaryv9Pbqp5OKT3wWcRSydB0p0A=
+github.com/mrz1836/postmark v1.6.1 h1:UHAs9WuZEBZj12MdZ/iVRyoC4tq3ODTdYhE17OhJeJ4=
+github.com/mrz1836/postmark v1.6.1/go.mod h1:6z5MxAH00Kj44owtQaryv9Pbqp5OKT3wWcRSydB0p0A=
 github.com/pkg/errors v0.9.1/go.mod h1:bwawxfHBFNV+L2hUp1rHADufV3IMtnDRdf1r5NINEl0=
 github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
 github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=