Duplicate import of the same data should *NOT* error out

.github/workflows/coverage.yaml

@@ -44,6 +44,7 @@ jobs:
           rm test_db.sqlite
           invoke migrate
           invoke import-records -f data.json
+          invoke import-records -f data.json
       - name: Test Translations 
         run: invoke translate
       - name: Check Migration Files

.github/workflows/mysql.yaml

@@ -56,4 +56,5 @@ jobs:
           invoke import-fixtures
           invoke export-records -f data.json
           python3 ./InvenTree/manage.py flush --noinput
+          invoke import-records -f data.json
           invoke import-records -f data.json

.github/workflows/postgresql.yaml

@@ -52,4 +52,5 @@ jobs:
           invoke import-fixtures
           invoke export-records -f data.json
           python3 ./InvenTree/manage.py flush --noinput
+          invoke import-records -f data.json
           invoke import-records -f data.json