Update changelog for 0.11.5

Author: gigerdo

CHANGELOG.md

@@ -315,7 +315,8 @@
 - Initial set of docs
 - CI integration
 
-[Unreleased]: https://github.com/elastic/terraform-provider-elasticstack/compare/v0.11.4...HEAD
+[Unreleased]: https://github.com/elastic/terraform-provider-elasticstack/compare/v0.11.5...HEAD
+[0.11.5]: https://github.com/elastic/terraform-provider-elasticstack/compare/v0.11.4...v0.11.5
 [0.11.4]: https://github.com/elastic/terraform-provider-elasticstack/compare/v0.11.3...v0.11.4
 [0.11.3]: https://github.com/elastic/terraform-provider-elasticstack/compare/v0.11.2...v0.11.3
 [0.11.2]: https://github.com/elastic/terraform-provider-elasticstack/compare/v0.11.1...v0.11.2