Updating Sairam Vengala Contributor Affiliation

Updating company affiliation after deciding to contribute
as an independent contributor.
This patch adds the end date of my previous company and adds
my independent affiliation.

Change-Id: I6fd51d35f54dc7c0b76a1f9131a31e621814905b

etc/default_data.json

@@ -29450,6 +29450,9 @@
             "companies": [
                 {
                     "company_name": "NEC",
+                    "end_date": "2023-Nov-24"
+                },
+                {   "company_name": "*independent",
                     "end_date": null
                 }
             ],