Change log for KASPERSKY_AV

Date Changes
2022-03-29 Added mappings for missing fields.
Added the following mappings:
"Result description" to "security_result.description"
"Type" to "security_result.threat_name"
"MD5" to "process.file.md5"
"SHA256" to "process.file.sha256"
"p2" to "target.process.file.full_path"
"p5" to "security_result.rule_name"
"p7" to "principal.user.user_display_name"
"Reason" to "security_result.summary"