ci: fixed node version

Author: luistak

.github/workflows/ci.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Use Node 12
         uses: actions/setup-node@v1
         with:
-          node-version: lts/*
+          node-version: 12.x
 
       - name: Use cached node_modules
         uses: actions/cache@v1

.github/workflows/release.yml

@@ -13,7 +13,7 @@ jobs:
       - uses: actions/checkout@v2
       - uses: actions/setup-node@v1
         with:
-          node-version: lts/*
+          node-version: 12.x
           registry-url: https://registry.npmjs.org/
       - run: yarn && npm publish
         env: