fix: upgrade Klaviyo API and other dependencies, fix related issues (#218)

Author: andreshernandez-e2x

.github/actions/connect/authenticate/action.yml

@@ -20,7 +20,7 @@ runs:
   using: "composite"
   steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
     - name: Obtain Authorization token from commercetools
       id: ct_auth
       uses: ./.github/actions/webrequest-action

.github/actions/postman/action.yml

@@ -52,7 +52,7 @@ runs:
       shell: bash
       working-directory: ./plugin/src/test/e2e/postman
     - name: Upload test results
-      uses: actions/upload-artifact@v3
+      uses: actions/upload-artifact@v4
       if: always()
       with:
         name: E2E-reports