[Vuejs]-Disable Vue Bootstrap Table Header Renaming

According the documents, there is a label attribute that can be set on the fields prop

Appears in the columns table header (and footer if foot-clone is set).
Defaults to the field’s key (in humanized format) if not provided.
It’s possible to use empty labels by assigning an empty string “” but
be sure you also set headerTitle to provide non-sighted users a hint
about the column contents.