net-mgmt/netdata: Update to 1.38.0

Assign maintainership to Namkhai B as requested

Backport following commits from upstream to fix bugs and builds
on FreeBSD 14:
7409cedde393a7b1d059615b1bca3fe871a1bc93
18383397aa937b21d9a35e79ad0cdc7727a66b61
47038b85a01cfe23162f07314a82f4e26d8432f0
357ed779a3cd4b9834808d82acc1e4d9c06f0d64

References:
https://github.com/netdata/netdata/commit/7409cedde393a7b1d059615b1bca3fe871a1bc93
https://github.com/netdata/netdata/commit/18383397aa937b21d9a35e79ad0cdc7727a66b61
https://github.com/netdata/netdata/commit/47038b85a01cfe23162f07314a82f4e26d8432f0
https://github.com/netdata/netdata/commit/357ed779a3cd4b9834808d82acc1e4d9c06f0d64

Differential Revision: D38478