ci: output npm version and install python 2.7 for node<16

Author: mscdex

.github/workflows/ci.yml

@@ -22,6 +22,16 @@ jobs:
           node-version: ${{ matrix.node-version }}
       - name: Check Node.js version
         run: node -pe process.versions
+      - name: Check npm version
+        run: npm -v
+      - name: Install Python 2.7 (node <16.x)
+        if: ${{ contains(fromJSON('["10.x", "12.x", "14.x"]'), matrix.node-version) }}
+        uses: LizardByte/[email protected]
+        with:
+          python-version: '2.7'
+      - name: Use Python 2.7 (node <16.x)
+        if: ${{ contains(fromJSON('["10.x", "12.x", "14.x"]'), matrix.node-version) }}
+        run: echo "PYTHON=$(which python2.7)" >> "$GITHUB_ENV"
       - name: Install module
         run: npm install
       - name: Run tests
@@ -48,6 +58,8 @@ jobs:
           python-version: '3.10'
       - name: Check Node.js version
         run: node -pe process.versions
+      - name: Check npm version
+        run: npm -v
       - name: Install module
         run: npm install
       - name: Run tests
@@ -68,6 +80,8 @@ jobs:
           node-version: ${{ matrix.node-version }}
       - name: Check Node.js version
         run: node -pe process.versions
+      - name: Check npm version
+        run: npm -v
       - name: Install module
         run: npm install
       - name: Run tests