ci: upgrade node version from 12 to 14

Author: Franck

.github/workflows/publish-to-gh.yml

@@ -11,7 +11,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 12
+          node-version: 14
       - run: yarn
       - run: yarn lint
 
@@ -22,7 +22,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 12
+          node-version: 14
       - run: yarn install
 
       - name: Build @igloo-ui/tokens

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v2
         with:
-          node-version: 12
+          node-version: 14
       - run: yarn
       - run: yarn lint
 
@@ -25,7 +25,7 @@ jobs:
           fetch-depth: 0
       - uses: actions/setup-node@v2
         with:
-          node-version: 12
+          node-version: 14
           registry-url: https://registry.npmjs.org/
       - run: yarn
       - name: Create Release Pull Request or Publish to npm