feat: drop support for node 12 & 14 (#111)

.github/workflows/ci.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-20.04
     strategy:
       matrix:
-        node: [12, 14, 16]
+        node: [16]
     steps:
     - name: Checkout
       uses: actions/checkout@v2

src/containers/CourseCard/components/CourseCardBanners/CertificateBanner.test.jsx

@@ -17,7 +17,7 @@ jest.mock('hooks', () => ({
   },
 }));
 
-jest.mock('Components/Banner', () => 'Banner');
+jest.mock('components/Banner', () => 'Banner');
 
 describe('CertificateBanner', () => {
   const props = { cardId: 'cardId' };