chore(deps): update prom/node-exporter docker tag to v1.12.1

[renovate]

This PR contains the following updates:

Package	Update	Change
prom/node-exporter	minor	v1.11.1 → v1.12.1

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Release Notes

prometheus/node_exporter (prom/node-exporter)

v1.12.1: 1.12.1 / 2026-07-14

Compare Source

• [BUGFIX] perf: Fix perf profiler flag handling #​3731
• [BUGFIX] edac: Fix optional csrow ue_count collection #​3734

v1.12.0: 1.12.0 / 2026-07-10

Compare Source

• [FEATURE] mountstats: Add NFS mountpoint info metric #​3554
• [FEATURE] nvmesubsystem: Add new collector #​3579
• [FEATURE] dmmultipath: Add new collector #​3581
• [FEATURE] infiniband: Add device filtering option #​3694
• [ENHANCEMENT] hwmon: disambiguate colliding chip labels #​3646
• [ENHANCEMENT] cpufreq: Add support for cpuinfo_avg_freq #​3712
• [ENHANCEMENT] filesystem: Support ext4 super block emergency_ro flag #​3717
• [ENHANCEMENT] edac: Add per-channel error metrics with DIMM labels #​3720
• [BUGFIX] diskstats: Only enforce mutual exclusivity for non-empty values #​3617
• [BUGFIX] thermal_zone: Handle EINVAL errors gracefully #​3657
• [BUGFIX] filesystem: Add comma separator in mount options #​3659
• [BUGFIX] diskstats: Fix rotational queue stats scrape regression #​3686
• [BUGFIX] filesystem: Prevent panic on mount points with non-UTF-8 names #​3687

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