chore!: Dropped support for Node 12 (#239)

* chore!: Dropped support for Node 12

* fix: dropped Node 12

Co-authored-by: Jawayria <39649635+Jawayria@users.noreply.github.com>

.github/workflows/ci.yml

@@ -3,17 +3,17 @@ name: node_js CI
 on:
   push:
     branches:
-      - master
+    - master
   pull_request:
     branches:
-      - "**"
+    - '**'
 
 jobs:
   test:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        node: [12, 14, 16]
+        node: [16]
 
     steps:
     - name: Checkout
@@ -56,4 +56,5 @@ jobs:
         subject: CI workflow failed in ${{github.repository}}
         to: masters-grades@edx.org
         from: github-actions <github-actions@edx.org>
-        body: CI workflow in ${{github.repository}} failed! For details see "github.com/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+        body: CI workflow in ${{github.repository}} failed! For details see "github.com/${{
+          github.repository }}/actions/runs/${{ github.run_id }}"