[3.11] GH-104554: Add RTSPS support to `urllib/parse.py` (GH-104605) (#105760)

RTSPS is the permanent scheme defined in
https://www.iana.org/assignments/uri-schemes/uri-schemes.xhtml
alongside RTSP and RTSPU schemes.

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(cherry picked from commit f3266c05b6186ab6d1db0799c06b8f76aefe7cf1)

Co-authored-by: zentarim <33746047+zentarim@users.noreply.github.com>
Co-authored-by: blurb-it[bot] <43283697+blurb-it[bot]@users.noreply.github.com>