build(deps): Bump github.com/theupdateframework/go-tuf

Bumps [github.com/theupdateframework/go-tuf](https://github.com/theupdateframework/go-tuf) from 0.6.1 to 0.7.0.
- [Release notes](https://github.com/theupdateframework/go-tuf/releases)
- [Commits](theupdateframework/go-tuf@v0.6.1...v0.7.0)

---
updated-dependencies:
- dependency-name: github.com/theupdateframework/go-tuf
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

go.mod

@@ -30,7 +30,7 @@ require (
 	github.com/spf13/cobra v1.8.0
 	github.com/spf13/pflag v1.0.5
 	github.com/spf13/viper v1.17.0
-	github.com/theupdateframework/go-tuf v0.6.1
+	github.com/theupdateframework/go-tuf v0.7.0
 	github.com/transparency-dev/merkle v0.0.2
 	github.com/veraison/go-cose v1.2.0
 	github.com/zalando/go-keyring v0.2.2 // indirect

go.sum

@@ -556,8 +556,8 @@ github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcU
 github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
 github.com/subosito/gotenv v1.6.0 h1:9NlTDc1FTs4qu0DDq7AEtTPNw6SVm7uBMsUCUjABIf8=
 github.com/subosito/gotenv v1.6.0/go.mod h1:Dk4QP5c2W3ibzajGcXpNraDfq2IrhjMIvMSWPKKo0FU=
-github.com/theupdateframework/go-tuf v0.6.1 h1:6J89fGjQf7s0mLmTG7p7pO/MbKOg+bIXhaLyQdmbKuE=
-github.com/theupdateframework/go-tuf v0.6.1/go.mod h1:LAFusuQsFNBnEyYoTuA5zZrF7iaQ4TEgBXm8lb6Vj18=
+github.com/theupdateframework/go-tuf v0.7.0 h1:CqbQFrWo1ae3/I0UCblSbczevCCbS31Qvs5LdxRWqRI=
+github.com/theupdateframework/go-tuf v0.7.0/go.mod h1:uEB7WSY+7ZIugK6R1hiBMBjQftaFzn7ZCDJcp1tCUug=
 github.com/tidwall/pretty v1.0.0/go.mod h1:XNkn88O1ChpSDQmQeStsy+sBenx6DDtFZJxhVysOjyk=
 github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399 h1:e/5i7d4oYZ+C1wj2THlRK+oAhjeS/TRQwMfkIuet3w0=
 github.com/titanous/rocacheck v0.0.0-20171023193734-afe73141d399/go.mod h1:LdwHTNJT99C5fTAzDz0ud328OgXz+gierycbcIx2fRs=