ci: update workflow

Author: denolfe

.github/workflows/publish.yml

@@ -1,10 +1,10 @@
-name: Test
+name: Build
 
 on:
-  push:
-    branches: [ master ]
   pull_request:
-    branches: [ master ]
+    types: [ opened, reopened, synchronize ]
+  push:
+    branches: [ main ]
 
 jobs:
   build:
@@ -16,5 +16,4 @@ jobs:
           node-version: '14.x'
           registry-url: 'https://registry.npmjs.org'
       - run: yarn install
-      - run: cd dev && yarn install
-      - run: yarn test
+      - run: yarn build