build: move doc versions JSON file out of out/doc

Move the generated previous doc versions JSON file out of `out/doc` to
prevent it being included in the distributed packages.

Signed-off-by: Richard Lau <riclau@uk.ibm.com>

PR-URL: https://github.com/nodejs/node/pull/32728
Fixes: https://github.com/nodejs/build/issues/2276


Reviewed-By: Shelley Vohr <codebytere@gmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Jiawen Geng <technicalcute@gmail.com>