Add Vikram to Committers List & Announce it on website (#371)

https://lists.apache.org/thread.html/rcf6890eeb236f0b49faf0ab6db868606ca338b292760c282708a1b80%40%3Cdev.airflow.apache.org%3E
diff --git a/landing-pages/site/content/en/announcements/_index.md b/landing-pages/site/content/en/announcements/_index.md
index 280b7ba..c2e6903 100644
--- a/landing-pages/site/content/en/announcements/_index.md
+++ b/landing-pages/site/content/en/announcements/_index.md
@@ -14,6 +14,10 @@
 **Note:** Follow [@ApacheAirflow](https://twitter.com/ApacheAirflow) on Twitter for the latest news and announcements!
 
 
+# January 5, 2021
+
+Airflow PMC welcomes **Vikram Koka** ([@vikramkoka](https://github.com/vikramkoka)) as the newest Airflow Committer.
+
 # December 25, 2020
 
 Airflow PMC welcomes **Xiaodong Deng** ([@XD-DENG](https://github.com/XD-DENG)) as the newest addition to Airflow PMC.
diff --git a/landing-pages/site/data/committers.json b/landing-pages/site/data/committers.json
index 3e42e72..ea3f7a0 100644
--- a/landing-pages/site/data/committers.json
+++ b/landing-pages/site/data/committers.json
@@ -56,5 +56,11 @@
     "github": "https://github.com/ryanahamilton",
     "image": "https://github.com/ryanahamilton.png",
     "nick": "ryanahamilton"
+  },
+  {
+    "name": "Vikram Koka",
+    "github": "https://github.com/vikramkoka",
+    "image": "https://github.com/vikramkoka.png",
+    "nick": "vikramkoka"
   }
 ]