fix: correct ci/cd release workflow for master -> main rename

Author: bryantbiggs

.github/workflows/semantic-releaser.yml

@@ -3,7 +3,7 @@ name: Release
 on:
   push:
     branches:
-      - master
+      - main
     paths:
       - '**.tf'
       - '!examples/**.tf'
@@ -20,7 +20,7 @@ jobs:
           persist-credentials: false
 
       - name: Setup Node.js
-        uses: actions/setup-node@v1
+        uses: actions/setup-node@v2
         with:
           node-version: 14