net-mgmt/netdata: Update to 2.11.1

Vendor the Go plugins via GH_TUPLE instead of fetching modules during
the build, and take the bundled SQLite from the archive upstream pins in
NetdataSQLite.cmake. Disable the IBM and NetFlow plugins, which would
otherwise fetch from the network or need Corrosion.

GOPLUGIN now covers the scripts plugin as well, both come from the same
Go module. The prebuilt dashboard is listed dynamically because its
file names carry content hashes, and it is licensed under NCUL1, not
netdata's GPLv3.

PR: 293216
Submitted by: jordan@ostreff.info
Approved by: maintainer timeout (nk@nkeor.me, 7 months)
Sponsored by: Netzkommune GmbH