Update mysql Docker tag to v9.7.1

Author: renovate[bot]

stacks/mysql.Dockerfile

@@ -1,7 +1,7 @@
 # How to use:
 # 1. Build the image: docker build -f mysql.Dockerfile --tag 'bin_mysql' .
 # 2. Run the container: docker run --name alala -e MYSQL_ROOT_PASSWORD=<some password> -p 3306:3306 -d bin_mysql
-FROM mysql:9.7.0@sha256:c11782aa2a96624c1efc121768641d96954faa136d6aa82751b032d8c426ffbc
+FROM mysql:9.7.1@sha256:ad88e1c86cbf12ef52d0a0360cd4b774d22956c5ee9c565645fb019d7aacb6c3
 
 # Copy the sample configuration file into the container
 COPY stacks/mysql/my.cnf.sample /etc/mysql/my.cnf