Upgrade to mailparser 3.9.7

Author: mattherman

package-lock.json

@@ -64,7 +64,7 @@
     "http-proxy-agent": "7.0.0",
     "https-proxy-agent": "7.0.6",
     "jsonpath-plus": "10.3.0",
-    "mailparser": "3.9.3",
+    "mailparser": "3.9.7",
     "nodemailer": "8.0.5",
     "prom-client": "15.1.0",
     "proper-lockfile": "4.1.2",