fix typo in tag

Signed-off-by: Brian Downs <[email protected]>

Dockerfile

@@ -138,7 +138,7 @@ RUN rm -vf /charts/*.sh /charts/*.md
 # This image includes any host level programs that we might need. All binaries
 # must be placed in bin/ of the file image and subdirectories of bin/ will be flattened during installation.
 # This means bin/foo/bar will become bin/bar when rke2 installs this to the host
-FROM rancher/hardened-kubernetes:v1.26.7-rke2r1-build202306719 AS kubernetes
+FROM rancher/hardened-kubernetes:v1.26.7-rke2r1-build20230719 AS kubernetes
 FROM rancher/hardened-containerd:v1.7.1-k3s1-build20230511 AS containerd
 FROM rancher/hardened-crictl:v1.26.1-build20230406 AS crictl
 FROM rancher/hardened-runc:v1.1.7-build20230511 AS runc