chore: add script to update sdk version (#196)

scripts/update-sdk-version.sh

@@ -0,0 +1,25 @@
+#!/usr/bin/env bash
+
+if [ "$#" -ne 1 ]; then
+    echo "Usage: $0 <commitish>"
+    exit 1
+fi
+
+HASH=$1
+
+# navigate to project root
+SCRIPT_DIR=$(dirname "$(realpath "$0")")
+cd "${SCRIPT_DIR}/.."
+
+# update sdk dir and switch to the new commit
+git submodule update --init --recursive
+cd aws-iot-device-sdk-cpp-v2
+git fetch
+git checkout ${HASH}
+cd -
+
+# commit the changes
+git add aws-iot-device-sdk-cpp-v2
+git commit -m "chore: update aws iot sdk to ${HASH}"
+
+echo "Updated repo to ${HASH}, please verify then push your changes"