Update docker.io/floci/floci-az Docker tag to v0.12.0 (#5426)

Author: renovate-bot

tools/testcontainers/floci-az/src/main/resources/org/apache/polaris/test/floci/az/Dockerfile-floci-az-version

@@ -19,4 +19,4 @@
 
 # Dockerfile to provide the image name and tag to a test.
 # Version is managed by Renovate - do not edit.
-FROM docker.io/floci/floci-az:0.11.0
+FROM docker.io/floci/floci-az:0.12.0