CLSA-2026-1790163949 grafana-pcp: Fix of CVE-2026-42504

rebuild with newer golang version 1.22.9-1.el92.tuxcare.els28 to fix the following Go standard-library CVE tracked for this package - CVE-2026-42504: fix mime quadratic complexity in DecodeHeader, which skipped only the leading "=?" of an undecodable encoded-word and so burned CPU on a header...