Update sqlite3 requirement from ~> 1.6.1 to ~> 1.7.0 (#529)

Updates the requirements on [sqlite3](https://github.com/sparklemotion/sqlite3-ruby) to permit the latest version.
- [Release notes](https://github.com/sparklemotion/sqlite3-ruby/releases)
- [Changelog](https://github.com/sparklemotion/sqlite3-ruby/blob/master/CHANGELOG.md)
- [Commits](sparklemotion/sqlite3-ruby@v1.6.1...v1.7.0)

---
updated-dependencies:
- dependency-name: sqlite3
  dependency-type: direct:development
...

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

statesman.gemspec

@@ -33,7 +33,7 @@ Gem::Specification.new do |spec|
   spec.add_development_dependency "rspec-github", "~> 2.4.0"
   spec.add_development_dependency "rspec-its", "~> 1.1"
   spec.add_development_dependency "rspec-rails", "~> 6.0"
-  spec.add_development_dependency "sqlite3", "~> 1.6.1"
+  spec.add_development_dependency "sqlite3", "~> 1.7.0"
   spec.add_development_dependency "timecop", "~> 0.9.1"
 
   spec.metadata = {