Distinguish "clear all tokens" command by GitLab version

What does this MR do?

The token column was removed from the ci_builds table in v15.4. See Remove token column from ci_builds.

With a version later than 15.3, they get this error after running UPDATE ci_builds SET token = null, token_encrypted = null;:

ERROR: column "token" of relation "ci_builds" does not exist

This addition provides an updated command for >= v15.4, which removes the token portion of the SQL query to avoid the above error.

Related issues

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