Update istio/mixer Docker tag to v1.7.8

Dockerfile

@@ -2,7 +2,7 @@ ARG BASE_REGISTRY=registry1.dsop.io
 ARG BASE_IMAGE=ironbank/redhat/ubi/ubi8
 ARG BASE_TAG=8.3
 
-FROM istio/mixer:1.7.7 AS base
+FROM istio/mixer:1.7.8 AS base
 
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
 

hardening_manifest.yaml

@@ -8,7 +8,7 @@ name: "opensource/istio-1.7/mixer-1.7"
 # The most specific version should be the first tag and will be shown
 # on ironbank.dsop.io
 tags:
-- "1.7.7"
+- "1.7.8"
 - "latest"
 
 # Build args passed to Dockerfile ARGs
@@ -27,7 +27,7 @@ labels:
   org.opencontainers.image.url: "https://istio.io/"
   ## Name of the distributing entity, organization or individual
   org.opencontainers.image.vendor: "opensource"
-  org.opencontainers.image.version: "1.7.7"
+  org.opencontainers.image.version: "1.7.8"
   ## Keywords to help with search (ex. "cicd,gitops,golang")
   mil.dso.ironbank.image.keywords: "istio"
   ## This value can be "opensource" or "commercial"
@@ -37,8 +37,8 @@ labels:
 
 # List of resources to make available to the offline build context
 resources:
-- tag: istio/mixer:1.7.7
-  url: docker://docker.io/istio/mixer@sha256:b10c447e1a0f378ba19ccba85807607405d4fe7f2acd1f4df91007bc237c93c4
+- tag: istio/mixer:1.7.8
+  url: docker://docker.io/istio/mixer@sha256:e2b06f22647f30d92d444adf3392edfdb09c29dca13f0f6bdd40d5a10439f7dd
 
 # List of project maintainers
 # FIXME: Fill in the following details for the current container owner in the whitelist