Remoed the version attribute from docker compose files

devcontainer-example/docker-compose.yml

@@ -1,4 +1,3 @@
-version: "3.7"
 services:
   mariadb:
     image: docker.io/mariadb:11.8

overrides/compose.custom-domain.yaml

@@ -1,5 +1,3 @@
-version: "3.3"
-
 services:
   custom-domain:
     image: caddy:2

overrides/compose.mariadb-shared.yaml

@@ -1,5 +1,3 @@
-version: "3.3"
-
 services:
   database:
     container_name: mariadb-database

overrides/compose.traefik.yaml

@@ -1,5 +1,3 @@
-version: "3.3"
-
 services:
   traefik:
     image: "traefik:v2.11"

pwd.yml

@@ -1,5 +1,3 @@
-version: "3"
-
 services:
   backend:
     image: frappe/erpnext:v15.92.0