update gh actions for yarn

.github/workflows/gpr_publish.yml

@@ -1,7 +1,7 @@
 # This workflow will run tests using node and then publish a package to GitHub Packages when a release is created
 # For more information see: https://help.github.com/actions/language-and-framework-guides/publishing-nodejs-packages
 
-name: Node.js Package
+name: GH Package Release
 
 on:
   release:
@@ -15,8 +15,8 @@ jobs:
       - uses: actions/setup-node@v1
         with:
           node-version: 12
-      - run: npm ci
-      - run: npm test
+      - run: yarn ci
+      - run: yarn test
 
   publish-gpr:
     needs: build
@@ -27,7 +27,7 @@ jobs:
         with:
           node-version: 12
           registry-url: https://npm.pkg.github.com/
-      - run: npm ci
-      - run: npm publish
+      - run: yarn ci
+      - run: yarn publish
         env:
           NODE_AUTH_TOKEN: ${{secrets.GITHUB_TOKEN}}

package.json

@@ -14,8 +14,8 @@
     "test_o": "ts-mocha tests/**/*.spec.ts",
     "test:e2e": "ts-mocha tests/e2e/**/*.spec.ts",
     "test:performance": "ts-mocha tests/performance/**/*.spec.ts",
-    "build:test": "npm run build && npm run test",
-    "prepublishOnly": "npm run build"
+    "build:test": "yarn run build && yarn run test",
+    "prepublishOnly": "yarn run build"
   },
   "files": [
     "dist",