70 instead of 40 days grace time for DESY SnS KPI reporting

DESY S&S KPI reporting involves manual steps that increase delay.

• on beginning of month (plus holidays), the reports are available for last month, allowing to extract user days for last-to-last month (now, most of january)
• I.e., overall 6-8 weeks delay
• 👉 suggest to increase grace to 2 months + few days = 70 days