remove matrix publish

Author: allanchau

.github/workflows/npmpublish.yml

@@ -22,14 +22,11 @@ jobs:
   publish-npm:
     needs: test
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node: ['10', '12']
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: ${{ matrix.node }}
+          node-version: 10
           registry-url: https://registry.npmjs.org/
       - run: yarn install --frozen-lockfile
       - run: yarn build
@@ -40,14 +37,11 @@ jobs:
   publish-gpr:
     needs: test
     runs-on: ubuntu-latest
-    strategy:
-      matrix:
-        node: ['10', '12']
     steps:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: ${{ matrix.node }}
+          node-version: 10
           registry-url: https://npm.pkg.github.com/
       - run: yarn install --frozen-lockfile
       - run: yarn build