Update CODEOWNERS (#347)

Co-authored-by: LocalStack Bot <localstack-bot@users.noreply.github.com>
Co-authored-by: Quetzalli <hola@quetzalliwrites.com>

Author: localstack-bot

CODEOWNERS

@@ -195,6 +195,9 @@
 # s3
 /src/content/docs/aws/services/s3.mdx @bentsku @k-a-il @quetzalliwrites @HarshCasper
 
+# s3tables
+/src/content/docs/aws/services/s3tables.mdx @hovaesco @quetzalliwrites @HarshCasper
+
 # sagemaker
 /src/content/docs/aws/services/sagemaker.mdx @silv-io @lukqw @quetzalliwrites @HarshCasper