fixes errors like fatal: [gitea]: FAILED! => {"msg": "The conditional check 'gitea_secret_key | length == 0' failed. The error was: Unexpected templating type error occurred on ({% if gitea_secret_key | length == 0 %} True {% else %} False {% endif %}): object of type 'AnsibleVaultEncryptedUnicode' has no len()
when using an encrypted string in vault for secrets