Bump code.cloudfoundry.org/tlsconfig from 0.2.0 to 0.4.0 (#3181)

Bumps [code.cloudfoundry.org/tlsconfig](https://github.com/cloudfoundry/tlsconfig) from 0.2.0 to 0.4.0.
- [Release notes](https://github.com/cloudfoundry/tlsconfig/releases)
- [Commits](cloudfoundry/tlsconfig@v0.2.0...v0.4.0)

---
updated-dependencies:
- dependency-name: code.cloudfoundry.org/tlsconfig
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

go.mod

@@ -14,7 +14,7 @@ require (
 	code.cloudfoundry.org/gofileutils v0.0.0-20170111115228-4d0c80011a0f
 	code.cloudfoundry.org/jsonry v1.1.4
 	code.cloudfoundry.org/lager/v3 v3.3.0
-	code.cloudfoundry.org/tlsconfig v0.2.0
+	code.cloudfoundry.org/tlsconfig v0.4.0
 	code.cloudfoundry.org/ykk v0.0.0-20170424192843-e4df4ce2fd4d
 	github.com/SermoDigital/jose v0.9.2-0.20161205224733-f6df55f235c2
 	github.com/blang/semver/v4 v4.0.0

go.sum

@@ -23,8 +23,8 @@ code.cloudfoundry.org/jsonry v1.1.4/go.mod h1:6aKilShQP7w/Ez76h1El2/n9y2OkHuU56n
 code.cloudfoundry.org/lager v1.1.1-0.20191008172124-a9afc05ee5be/go.mod h1:O2sS7gKP3HM2iemG+EnwvyNQK7pTSC6Foi4QiMp9sSk=
 code.cloudfoundry.org/lager/v3 v3.3.0 h1:adWGo2aBLpHVfUG+3D2FQ4B6Mf2Bcz47KITbn8V4b0k=
 code.cloudfoundry.org/lager/v3 v3.3.0/go.mod h1:k/AYgZTVrwQaneNfQ2EwnZxUb9iUFE7i6AJ3KVOtAdE=
-code.cloudfoundry.org/tlsconfig v0.2.0 h1:OPmMIduZVg1AE6m7V+CrULybZMeEWLPXxkKAc0RYLlU=
-code.cloudfoundry.org/tlsconfig v0.2.0/go.mod h1:7soG27nMBzgrlYo6FuVCVxCjdMmVUBgdKLmtjrMFBrg=
+code.cloudfoundry.org/tlsconfig v0.4.0 h1:yPk995C/KPW7Ck57VqS6chJAKnzTdE/QnXjHLOrrFOw=
+code.cloudfoundry.org/tlsconfig v0.4.0/go.mod h1:AUJ2Wk4VsDw+VDtu7/bK49hbgjy7gScv8ocPTDPKRhw=
 code.cloudfoundry.org/ykk v0.0.0-20170424192843-e4df4ce2fd4d h1:M+zXqtXJqcsmpL76aU0tdl1ho23eYa4axYoM4gD62UA=
 code.cloudfoundry.org/ykk v0.0.0-20170424192843-e4df4ce2fd4d/go.mod h1:YUJiVOr5xl0N/RjMxM1tHmgSpBbi5UM+KoVR5AoejO0=
 filippo.io/edwards25519 v1.1.0 h1:FNf4tywRC1HmFuKW5xopWpigGjJKiJSV0Cqo0cJWDaA=