Bump github.com/safing/portbase from 0.16.2 to 0.16.4

Bumps [github.com/safing/portbase](https://github.com/safing/portbase) from 0.16.2 to 0.16.4.
- [Release notes](https://github.com/safing/portbase/releases)
- [Commits](https://github.com/safing/portbase/compare/v0.16.2...v0.16.4)

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

Signed-off-by: dependabot[bot] <support@github.com>

go.mod

@@ -6,7 +6,7 @@ require (
 	github.com/AlecAivazis/survey/v2 v2.3.6
 	github.com/aead/ecdh v0.2.0
 	github.com/mr-tron/base58 v1.2.0
-	github.com/safing/portbase v0.16.2
+	github.com/safing/portbase v0.16.4
 	github.com/satori/go.uuid v1.2.0
 	github.com/spf13/cobra v1.5.0
 	github.com/tevino/abool v1.2.0

go.sum

@@ -95,8 +95,8 @@ github.com/russross/blackfriday v1.5.2/go.mod h1:JO/DiYxRf+HjHt06OyowR9PTA263kcR
 github.com/russross/blackfriday/v2 v2.1.0/go.mod h1:+Rmxgy9KzJVeS9/2gXHxylqXiyQDYRxCVz55jmeOWTM=
 github.com/safing/jess v0.3.0/go.mod h1:JbYsPk5iJZx0OXDZeMcjS9qEdkGVUg+DCA8Fw2LdN9s=
 github.com/safing/portbase v0.15.2/go.mod h1:5bHi99fz7Hh/wOsZUOI631WF9ePSHk57c4fdlOMS91Y=
-github.com/safing/portbase v0.16.2 h1:ZlCZBZkKmgJDR+sHSRbFc9mM8m9qYtu8agE1xCirvQU=
-github.com/safing/portbase v0.16.2/go.mod h1:mzNCWqPbO7vIYbbK5PElGbudwd2vx4YPNawymL8Aro8=
+github.com/safing/portbase v0.16.4 h1:3w4Sc0TlSDvUS4Uk5TrsFXf98cwMbCf+BG5Bw6coxNk=
+github.com/safing/portbase v0.16.4/go.mod h1:mzNCWqPbO7vIYbbK5PElGbudwd2vx4YPNawymL8Aro8=
 github.com/satori/go.uuid v1.2.0 h1:0uYX9dsZ2yD7q2RtLRtPSdGDWzjeM3TbMJP9utgA0ww=
 github.com/satori/go.uuid v1.2.0/go.mod h1:dA0hQrYB0VpLJoorglMZABFdXlWrHn1NEOzdhQKdks0=
 github.com/seehuhn/fortuna v1.0.1/go.mod h1:LX8ubejCnUoT/hX+1aKUtbKls2H6DRkqzkc7TdR3iis=