fix: revert to rockylinux SHA that works (arm64) (#428)

unnecessary SHA update introduced in
#427 that needs
to be reverted

Author: micmarty-deepsense

Dockerfile-arm64

@@ -1,5 +1,5 @@
 # syntax=docker/dockerfile:experimental
-FROM quay.io/unstructured-io/base-images:rocky9.2-9@sha256:66f84447138b893b272e75044f9967379de3e874849cb2b9cb7aa2b3e9dea4e6 as base
+FROM quay.io/unstructured-io/base-images:rocky9.2-9@sha256:73d8492452f086144d4b92b7931aa04719f085c74d16cae81e8826ef873729c9 as base
 
 # NOTE(crag): NB_USER ARG for mybinder.org compat:
 #             https://mybinder.readthedocs.io/en/latest/tutorials/dockerfile.html