chore: pin major versions of actions

Author: nickserv

.github/workflows/build.yml

@@ -26,10 +26,10 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@master
+        uses: actions/checkout@v3
 
       - name: Setup node
-        uses: actions/setup-node@master
+        uses: actions/setup-node@v3
         with:
           node-version: ${{ matrix.node }}