Update MySQL and PosgreSQL to the latest (#55)

Author: alexshtin

docker-compose-mysql-es.yml

@@ -18,7 +18,7 @@ services:
     container_name: temporal-mysql
     environment:
       - MYSQL_ROOT_PASSWORD=root
-    image: mysql:5.7
+    image: mysql:8
     networks:
       - temporal-network
     ports:

docker-compose-mysql.yml

@@ -4,7 +4,7 @@ services:
     container_name: temporal-mysql
     environment:
       - MYSQL_ROOT_PASSWORD=root
-    image: mysql:5.7
+    image: mysql:8
     networks:
       - temporal-network
     ports:

docker-compose-postgres.yml

@@ -5,7 +5,7 @@ services:
     environment:
       POSTGRES_PASSWORD: temporal
       POSTGRES_USER: temporal
-    image: postgres:9.6
+    image: postgres:13
     networks:
       - temporal-network
     ports:

docker-compose-ui-experimental.yml

@@ -19,7 +19,7 @@ services:
     environment:
       POSTGRES_PASSWORD: temporal
       POSTGRES_USER: temporal
-    image: postgres:9.6
+    image: postgres:13
     networks:
       - temporal-network
     ports:

docker-compose.yml

@@ -19,7 +19,7 @@ services:
     environment:
       POSTGRES_PASSWORD: temporal
       POSTGRES_USER: temporal
-    image: postgres:9.6
+    image: postgres:13
     networks:
       - temporal-network
     ports: