Acquia is performing maintenance to remove Ruby v2.5 from our platform, as it has reached its end of life as of March 31, 2021.
Since the current default is Ruby v2.7 most Customers will not be impacted. This will only have an impact if you are manually using Ruby v2.5 in your Pipelines Definition File.
How to check
If you are unsure if this will impact your application, you can double check your Pipelines Build Definition File for a line similar to:
rbenv use 2.5.0
For security and other reasons, Acquia recommends to use a newer version of Ruby. If for whatever reason you still require to use this older version, you can manually install it in your Pipelines Definition File, below is an example how to do this:
rbenv install 2.5.0 rbenv use 2.5.0
You can also do this in one line:
rbenv --default install 2.5.0
If you have any further questions about any of this information, please reach out to the Acquia Support Team.