Update Istio to 1.28.1 (#621)

Co-authored-by: sebrandon1 <4563082+sebrandon1@users.noreply.github.com>

Author: sebrandon1

scripts/delete-istio.sh

@@ -6,7 +6,7 @@ SCRIPT_DIR=$(dirname "$0")
 # shellcheck disable=SC1091 # Not following.
 source "$SCRIPT_DIR"/init-env.sh
 
-ISTIO_VERSION=1.28.0
+ISTIO_VERSION=1.28.1
 ISTIO_DIR=istio-$ISTIO_VERSION
 
 # Check if required environment variables are set

scripts/install-istio.sh

@@ -6,7 +6,7 @@ SCRIPT_DIR=$(dirname "$0")
 # shellcheck disable=SC1091 # File not following.
 source "$SCRIPT_DIR"/init-env.sh
 
-ISTIO_VERSION=1.28.0
+ISTIO_VERSION=1.28.1
 ISTIO_DIR=istio-$ISTIO_VERSION
 ISTIO_PROFILE=demo