Upkeep: Update pinned library versions

Author: github-actions[bot]

linux/base.Dockerfile

@@ -172,7 +172,7 @@ RUN chmod 755 /usr/local/bin/ansible* \
 
 
 # Install specific version of Istio from GitHub releases
-ENV ISTIO_VERSION=1.28.1
+ENV ISTIO_VERSION=1.28.2
 RUN export TMP_DIR=$(mktemp -d) \
   && cd "${TMP_DIR}" \
   && curl -L https://github.com/istio/istio/releases/download/${ISTIO_VERSION}/istio-${ISTIO_VERSION}-linux-amd64.tar.gz -o istio.tar.gz \