Added EOL for Ubuntu 21.10 (#1131)

As per (https://wiki.ubuntu.com/Releases) and (https://ubuntu.com/about/release-cycle), Ubuntu 21.10 is supported until July 2022

Author: designanderror

pkg/detector/ospkg/ubuntu/ubuntu.go

@@ -50,6 +50,7 @@ var (
 		"20.04": time.Date(2030, 4, 23, 23, 59, 59, 0, time.UTC),
 		"20.10": time.Date(2021, 7, 22, 23, 59, 59, 0, time.UTC),
 		"21.04": time.Date(2022, 1, 22, 23, 59, 59, 0, time.UTC),
+		"21.10": time.Date(2022, 7, 22, 23, 59, 59, 0, time.UTC),
 	}
 )