7.17 Release notes

Compatibility with Elasticsearch v7.17.7 APIs.
Tested versions of Ruby for 7.17.7: Ruby (MRI) 2.6, 2.7, 3.0 and 3.1, JRuby 9.3.

No release.

Improves handling of YAML parsing, uses safe_load instead of load when doing the product verification (should only affect Ruby < 3.0).
Updates headers setup when using the Manticore adapter. This fixes an issue where the user-agent header was being foverridden even when it was being set on initialization via the transport options. Pull Request, issue.

Drops Ruby 2.5 from the test matrix. Support for Ruby 2.5 was dropped March 2021.
Updates the product verification when the response is a 413 error.