feat: upgraded to node v18, added .nvmrc and updated workflows (#471)

* feat: upgraded to node v18, added .nvmrc and updated workflows

* refactor: updated packages

* refactor: resolved eslint issues

.github/workflows/ci.yml

@@ -9,18 +9,17 @@ on:
 jobs:
   tests:
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node: [16]
     steps:
     - name: Checkout
       uses: actions/checkout@v2
       with:
         fetch-depth: 0
+    - name: Setup Nodejs Env
+      run: echo "NODE_VER=`cat .nvmrc`" >> $GITHUB_ENV
     - name: Setup Nodejs
       uses: actions/setup-node@v2
       with:
-        node-version: ${{ matrix.node }}
+        node-version: ${{ env.NODE_VER }}
     - name: Install dependencies
       run: npm ci
     - name: Validate package-lock.json changes

.github/workflows/lockfileversion-check.yml

@@ -10,4 +10,4 @@ on:
 
 jobs:
   version-check:
-    uses: openedx/.github/.github/workflows/lockfileversion-check.yml@master
+    uses: openedx/.github/.github/workflows/lockfileversion-check-v3.yml@master