Jenkins build failure after Git ssh key update

[cliveabrown]

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We are facing issues since the Git ssh key update last week. We have made the relevant changes to support the new key within this documentation https://levelup.gitconnected.com/warning-remote-host-identification-has-changed-97562f36c264 but we are still getting errors when pushing to git repo. We are on a older version of jenkins 2.190.1 and the plugin is throwing the below error. This is a Bitnami jenkins install. Error is shown below. Any help would be greatly appreciated. FYI - Upgrading to a newer version of jenkins is not an option at the moment.

[ERROR] Failed to execute goal org.apache.maven.plugins:maven-release-plugin:2.5.3:prepare (default-cli) on project springboard: Unable to commit files
[ERROR] Provider message:
[ERROR] The git-push command failed.
[ERROR] Command output:
[ERROR] Host key verification failed.
[ERROR] fatal: Could not read from remote repository.
[ERROR]
[ERROR] Please make sure you have the correct access rights
[ERROR] and the repository exists.
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]

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