chore(workflows): bump setup-node and fix node version used in tests (#722)

Author: RomainCoudour

.github/workflows/build.yml

@@ -21,9 +21,9 @@ jobs:
       - uses: actions/checkout@v2
         with:
           fetch-depth: 0
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
-            node-version: 14.17.6
+          node-version: 12.13.0
       - uses: actions/cache@v2
         with:
           path: '**/node_modules'
@@ -41,7 +41,7 @@ jobs:
     needs: [lint]
     steps:
       - uses: actions/checkout@v2
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
       - name: Cache node_modules
         uses: actions/cache@v2
         with:
@@ -67,7 +67,7 @@ jobs:
       - uses: actions/checkout@v2
         with:
           persist-credentials: false # GITHUB_TOKEN must not be set for the semantic release
-      - uses: actions/setup-node@v1
+      - uses: actions/setup-node@v2
         with:
           node-version: 12.13.0
       - uses: actions/cache@v2