Update workflow to track 'main' branch instead of 'v3.0.1'

This commit updates the Github Actions CI/CD workflow to track changes from the main branch instead of branch v3.0.1. It changes actions in package.yml to fetch, verify commits, and grep in the 'main' branch.

.github/workflows/packages.yml

@@ -3,7 +3,7 @@ on:
   workflow_dispatch:
   push:
     branches:
-      - v3.0.1
+      - main
   release:
     types: [ prereleased, published ]
 env:
@@ -18,10 +18,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
-      - name: Verify commit exists in origin/v3.0.1
+      - name: Verify commit exists in origin/main
         run: |
           git fetch --no-tags --prune --depth=1 origin +refs/heads/*:refs/remotes/origin/*
-          git branch --remote --contains | grep origin/v3.0.1
+          git branch --remote --contains | grep origin/main
       - name: Set VERSION variable
         run: |
           if [[ "${{ github.ref }}" == refs/tags/* && "${{ github.event_name }}" == "release" && "${{ github.event.action }}" == "published" ]]; then