Update CI config (#498)

* switch to Node.js 14.x
* specify `FORCE_COLOR: 2` so that we get colored output
* remove unneeded `CI: true` env variable since it's already being set by the runner
* update to `actions/setup-node@v2`
* add a comment about `wheel` installation

Signed-off-by: XhmikosR <xhmikosr@gmail.com>

.github/workflows/ci.yml

@@ -9,8 +9,8 @@ on:
       - "**"
 
 env:
-  CI: true
-  NODE: 12.x
+  FORCE_COLOR: 2
+  NODE: 14.x
   PYTHON_VERSION: "3.7"
 
 jobs:
@@ -28,7 +28,7 @@ jobs:
           architecture: "x64"
 
       - name: Set up Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: "${{ env.NODE }}"
 
@@ -39,10 +39,12 @@ jobs:
           key: ${{ runner.os }}-pip-${{ env.PYTHON_VERSION }}-${{ hashFiles('**/requirements.txt') }}
           restore-keys: ${{ runner.os }}-pip-${{ env.PYTHON_VERSION }}-${{ hashFiles('**/requirements.txt') }}
 
+      # This is needed otherwise pip warns:
+      # Using legacy 'setup.py install' for DEP, since package 'wheel' is not installed.
       - run: pip install --upgrade wheel
 
       - name: Install Python dependencies
-        run: python3 -m pip install -r requirements.txt
+        run: pip install -r requirements.txt
 
       - name: Install npm dependencies
         run: npm ci