Modified the public key for MySQL repository

Dockerfile

@@ -7,7 +7,7 @@ RUN apt-get update && apt-get install -y apt-transport-https wget lsb-release gn
   echo "deb http://apt.postgresql.org/pub/repos/apt/ jammy-pgdg main" >> /etc/apt/sources.list.d/postgresql.list && \
   wget --quiet -O - https://www.postgresql.org/media/keys/ACCC4CF8.asc | apt-key add - && \
   echo "deb http://repo.mysql.com/apt/ubuntu bionic mysql-5.7" >> /etc/apt/sources.list.d/mysql.list && \
-  apt-key adv --keyserver pgp.mit.edu --recv-keys 5072E1F5 && \
+  apt-key adv --keyserver pgp.mit.edu --recv-keys B7B3B788A8D3785C && \
   apt-get update && \
   apt-get install -y \
     mongodb-database-tools \