Update changelog for v1.10.0 (#610)

Author: gigerdo

docs/release_notes/v1.10.0.adoc

@@ -45,6 +45,7 @@ https://download.elastic.co/downloads/ecctl/1.10.0/ecctl_1.10.0_linux_amd64.tar.
 // The following section is autogenerated via git
 
 [%hardbreaks]
+https://github.com/elastic/ecctl/commit/4c1e0fd[4c1e0fd] Update cloud-sdk-go to v1.12.0 (https://github.com/elastic/ecctl/pull/609[#609])
 https://github.com/elastic/ecctl/commit/68a5cb2[68a5cb2] fix(deps): update module golang.org/x/term to v0.4.0 (https://github.com/elastic/ecctl/pull/592[#592])
 https://github.com/elastic/ecctl/commit/e2eef8e[e2eef8e] chore(deps): update peterjgrainger/action-create-branch action to v2.4.0 (https://github.com/elastic/ecctl/pull/593[#593])