chore(deps): update mysql docker tag to v9

Author: renovate[bot]

docker-compose-ci-mysql.yml

@@ -2,7 +2,7 @@ version: "3"
 
 services:
   mysql:
-    image: mysql:5.7.44@sha256:4bc6bc963e6d8443453676cae56536f4b8156d78bae03c0145cbe47c2aad73bb
+    image: mysql:9.4.0@sha256:082063dca94535c76b91c6ef9b9f6748810e546887af5e8574a8cfa11eace184
     command: --default-authentication-plugin=mysql_native_password
     environment:
       MYSQL_ROOT_PASSWORD: pact_broker

docker-compose-test.yml

@@ -50,7 +50,7 @@ services:
       - ./docs:/home/docs
 
   mysql:
-    image: mysql:5.7.44@sha256:4bc6bc963e6d8443453676cae56536f4b8156d78bae03c0145cbe47c2aad73bb
+    image: mysql:9.4.0@sha256:082063dca94535c76b91c6ef9b9f6748810e546887af5e8574a8cfa11eace184
     #image: arm64v8/mysql # for m1 macs
     command: --default-authentication-plugin=mysql_native_password
     environment: