ci(workflow): add 'npm' cache for actions/setup-node in .github/workflows

.github/workflows/npm-eslint-plugin-meteor.yml

@@ -2,10 +2,10 @@ name: NPM eslint-plugin-meteor
 on:
   push:
     paths:
-      - 'npm-packages/eslint-plugin-meteor/**'
+      - "npm-packages/eslint-plugin-meteor/**"
   pull_request:
     paths:
-      - 'npm-packages/eslint-plugin-meteor/**'
+      - "npm-packages/eslint-plugin-meteor/**"
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -14,13 +14,13 @@ jobs:
         working-directory: npm-packages/eslint-plugin-meteor
     strategy:
       matrix:
-        node-version: [ 12.x, 14.x ]
+        node-version: [12.x, 14.x]
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
+          cache: npm
       - run: npm ci
       - run: npm test
-

.github/workflows/npm-meteor-babel.yml

@@ -2,10 +2,10 @@ name: NPM meteor-babel
 on:
   push:
     paths:
-      - 'npm-packages/meteor-babel/**'
+      - "npm-packages/meteor-babel/**"
   pull_request:
     paths:
-      - 'npm-packages/meteor-babel/**'
+      - "npm-packages/meteor-babel/**"
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -14,12 +14,13 @@ jobs:
         working-directory: npm-packages/meteor-babel
     strategy:
       matrix:
-        node-version: [ 12.x, 14.x ]
+        node-version: [12.x, 14.x]
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
+          cache: npm
       - run: npm ci
       - run: npm run test

.github/workflows/npm-meteor-promise.yml

@@ -2,10 +2,10 @@ name: NPM meteor-promise
 on:
   push:
     paths:
-      - 'npm-packages/meteor-promise/**'
+      - "npm-packages/meteor-promise/**"
   pull_request:
     paths:
-      - 'npm-packages/meteor-promise/**'
+      - "npm-packages/meteor-promise/**"
 jobs:
   test:
     runs-on: ubuntu-latest
@@ -14,12 +14,13 @@ jobs:
         working-directory: npm-packages/meteor-promise
     strategy:
       matrix:
-        node-version: [ 12.x, 14.x ]
+        node-version: [12.x, 14.x]
     steps:
       - uses: actions/checkout@v2
       - name: Use Node.js ${{ matrix.node-version }}
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: ${{ matrix.node-version }}
+          cache: npm
       - run: npm ci
       - run: npm run test