[automation] update elastic stack version for testing 7.13.1-1ba26435#26002

Merged

mergify[bot] merged 1 commit into7.13from update-stack-version-20210531050733-7.13

May 31, 2021

+6-6

Commits on May 31, 2021

[Automation] Update elastic stack version to 7.13.1-1ba26435 for testing
apmmachine
committed