Update net-ssh requirement from >= 2.9, < 7.0 to >= 2.9, < 8.0 (test-…

…kitchen#1908)

* Update net-ssh requirement from >= 2.9, < 7.0 to >= 2.9, < 8.0

Updates the requirements on [net-ssh](https://github.com/net-ssh/net-ssh) to permit the latest version.
- [Release notes](https://github.com/net-ssh/net-ssh/releases)
- [Changelog](https://github.com/net-ssh/net-ssh/blob/master/CHANGES.txt)
- [Commits](net-ssh/net-ssh@v2.9.0...v5.2.0)

---
updated-dependencies:
- dependency-name: net-ssh
  dependency-type: direct:production
...

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

* Update test-kitchen.gemspec

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Tim Smith <tsmith84@gmail.com>

test-kitchen.gemspec

@@ -24,7 +24,7 @@ Gem::Specification.new do |gem|
 
   gem.add_dependency "mixlib-shellout",    ">= 1.2", "< 4.0"
   gem.add_dependency "net-scp",            ">= 1.1", "< 4.0" # pinning until we can confirm 4+ works
-  gem.add_dependency "net-ssh",            ">= 2.9", "< 7.0" # pinning until we can confirm 7+ works
+  gem.add_dependency "net-ssh",            ">= 2.9", "< 8.0" # pinning until we can confirm 8+ works
   gem.add_dependency "net-ssh-gateway",    ">= 1.2", "< 3.0" # pinning until we can confirm 3+ works
   gem.add_dependency "ed25519",            "~> 1.2" # ed25519 ssh key support
   gem.add_dependency "bcrypt_pbkdf",       "~> 1.0" # ed25519 ssh key support