fix: update build workflow reference for 3Series builds to main

Author: jkdevito

.github/workflows/Essentials-builds-3series-caller.yml

@@ -10,8 +10,7 @@ jobs:
     uses: PepperDash/workflow-templates/.github/workflows/essentialsplugins-getversion.yml@main
     secrets: inherit
   build-3Series:
-    #uses: PepperDash/workflow-templates/.github/workflows/essentials-3Series-builds.yml@main
-    uses: PepperDash/workflow-templates/.github/workflows/essentials-3Series-builds.yml@plugins-build-workflows
+    uses: PepperDash/workflow-templates/.github/workflows/essentials-3Series-builds.yml@main
     secrets: inherit
     needs: getVersion
     if: needs.getVersion.outputs.newVersion == 'true'