sysutils/node_exporter: Update 1.8.2 => 1.9.1
Changelogs:
https://github.com/prometheus/node_exporter/releases/tag/v1.9.0
https://github.com/prometheus/node_exporter/releases/tag/v1.9.1
Improve alignment - non-functional changes.
PR: 288060
Approved by: David O'Rourke <dor.bsd@xm0.uk> (maintainer)
MFH: 2025Q3
(cherry picked from commit e5a5ffef998ddd0ee89875e1093b30a77d4628e2)