ci: update to use pnpm

Author: jackyef

.github/workflows/bundlewatch-master.yml

@@ -10,9 +10,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - uses: Borales/actions-yarn@v2.1.0
-      - run: yarn install
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '10.x'
+      - run: pnpm run bootstrap
       - uses: jackyef/bundlewatch-gh-action@master
         with:
-          build-script: yarn build:minify
+          build-script: pnpm run build:minify
           bundlewatch-github-token: ${{ secrets.BUNDLEWATCH_GITHUB_TOKEN }}

.github/workflows/bundlewatch.yml

@@ -9,9 +9,11 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - uses: Borales/actions-yarn@v2.1.0
-      - run: yarn install
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '10.x'
+      - run: pnpm run bootstrap
       - uses: jackyef/bundlewatch-gh-action@master
         with:
-          build-script: yarn build:minify
+          build-script: pnpm run build:minify
           bundlewatch-github-token: ${{ secrets.BUNDLEWATCH_GITHUB_TOKEN }}

.github/workflows/coverage-master.yml

@@ -10,11 +10,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - uses: Borales/actions-yarn@v2.1.0
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '10.x'
       - name: 'Setup'
-        run: yarn install
+        run: pnpm run bootstrap
       - name: 'Run tests'
-        run: yarn test:coverage
+        run: pnpm run test:coverage
       - uses: codecov/codecov-action@v1
         with:
           token: ${{ secrets.CODECOV_TOKEN }} #required

.github/workflows/coverage.yml

@@ -9,11 +9,13 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v1
-      - uses: Borales/actions-yarn@v2.1.0
+      - uses: actions/setup-node@v1
+        with:
+          node-version: '10.x'
       - name: 'Setup'
-        run: yarn install
+        run: pnpm run bootstrap
       - name: 'Run tests'
-        run: yarn test:coverage
+        run: pnpm run test:coverage
       - uses: codecov/codecov-action@v1
         with:
           token: ${{ secrets.CODECOV_TOKEN }} #required

package.json

@@ -4,7 +4,7 @@
   "version": "0.0.1",
   "description": "Work in progress",
   "engines": {
-    "pnpm": ">=3.9.0"
+    "pnpm": ">=4.9.0"
   },
   "scripts": {
     "bootstrap": "pnpm recursive install",