Adds TURBO SCM base

Author: Mohammod Al Amin Ashik

.github/workflows/unit-test.yaml

@@ -38,3 +38,4 @@ jobs:
         run: ./scripts/publish-preview-packages.sh
         env:
           LERNA_SINCE: ${{ github.event_name == 'pull_request' && github.event.pull_request.base.sha || github.event.before }}
+          TURBO_SCM_BASE: origin/main

scripts/publish-preview-packages.sh

@@ -6,4 +6,4 @@ packages=$(echo "$result" | jq -r '.tasks[].directory' | grep '^packages/' | sed
 
 if [ -n "$packages" ]; then
   pnpx pkg-pr-new publish --pnpm $packages
-fi
+fi