Update istio/mixer Docker tag to v1.6.8

Dockerfile

@@ -2,7 +2,7 @@ ARG BASE_REGISTRY=nexus-docker-secure.levelup-dev.io
 ARG BASE_IMAGE=redhat/ubi/ubi8
 ARG BASE_TAG=8.2
 
-FROM istio/mixer:1.6.7 AS base
+FROM istio/mixer:1.6.8 AS base
 
 FROM ${BASE_REGISTRY}/${BASE_IMAGE}:${BASE_TAG}
 
@@ -10,7 +10,7 @@ LABEL org.opencontainers.image.title="mixer" \
       org.opencontainers.image.description="Mixer provides policy controls and telemetry collection." \
       org.opencontainers.image.licenses="Apache-2.0" \
       org.opencontainers.image.url="https://istio.io" \
-      org.opencontainers.image.version="1.6.7" \
+      org.opencontainers.image.version="1.6.8" \
       maintainer="cht@dsop.io"
 
 COPY --from=base /usr/local/bin/mixs /usr/local/bin/mixs

Jenkinsfile

 @Library('DCCSCR@master') _
-dccscrPipeline(version: "1.6.7")
+dccscrPipeline(version: "1.6.8")

download.yaml

 ---
 resources:
-  - url: "docker://docker.io/istio/mixer@sha256:1ac9f0efe0e70bc3bf3dac90070de7ba8ba4767b712b81543ef12622dbbcc96c"
-    tag: "istio/mixer:1.6.7"
+  - url: "docker://docker.io/istio/mixer@sha256:71516e570b5d42707d40913dab630d7f9b1b0f93f972f4d2f543a274dada1819"
+    tag: "istio/mixer:1.6.8"

[jenkins-gitlab]

Pipeline Status: FAILURE
FAILURE Stage: Whitelist Compare Lint
Branch: renovate/docker-istio-mixer-1.6.x

graph LR
  0([setup]):::INTERNAL_FAILURE --> 3([Import Artifacts]):::NOT_BUILT --> 4((/)):::INTERNAL_NOT_BUILT --> 5([Stage Artifacts]):::NOT_BUILT --> 6((/)):::INTERNAL_NOT_BUILT --> 7([Build]):::NOT_BUILT --> 8([Publish, Scan & Report]):::INTERNAL_FAILURE

classDef SUCCESS font-size:10px
classDef FAILURE fill:#f44, font-size:10px
classDef SKIPPED font-size:10px
classDef ABORTED fill:#889, font-size:10px
classDef INTERNAL_SUCCESS font-size:10px, stroke-dasharray: 2, 1
classDef INTERNAL_FAILURE fill:#f44, font-size:10px, stroke-dasharray: 2, 1
classDef INTERNAL_SKIPPED font-size:10px, stroke-dasharray: 2, 1
classDef INTERNAL_ABORTED fill:#889, font-size:10px, stroke-dasharray: 2, 1