v1.9.1

Fixes

• Adds homepage and required_ruby_version to gemspec (#222)
• Replace deprecated OneLogin::RubySaml::Settings#issuer with sp_entity_id (#220)
• Update File.exists? reference (#223)
  • This is required for Ruby 3.2

Housekeeping

• Add Dependabot for GitHub Actions (#225)
• Bump actions/checkout from 2 to 3 (#226)
• Adds Ruby 3.2 to the CI matrix (#231)