chore: Update Shopware 6.6.10 tag to v6.6.10.3

Author: aragon999

.github/workflows/build-docker-images.yaml

@@ -275,7 +275,7 @@ jobs:
             php-version: "8.3"
             flavour: alpine
             template: https://github.com/shopware/shopware
-          - shopware-version: v6.6.10.2
+          - shopware-version: v6.6.10.3
             php-version: "8.3"
             flavour: alpine
             template: https://github.com/shopware/shopware
@@ -459,7 +459,7 @@ jobs:
             php-version: "8.3"
             flavour: debian
             template: https://github.com/shopware/shopware
-          - shopware-version: v6.6.10.2
+          - shopware-version: v6.6.10.3
             php-version: "8.3"
             flavour: debian
             template: https://github.com/shopware/shopware