Build/Test Tools: Change 6.4 default values of LOCAL_PHP/LOCAL_DB_VERSION.

This changes the default values for `LOCAL_PHP` and `LOCAL_DB_VERSION` in the 6.4 branch from `latest` to `8.3-fpm` (with beta support) and `8.0`, respectively, to properly reflect the highest versions of PHP and MySQL that this branch will support.

See #61533.

git-svn-id: https://develop.svn.wordpress.org/branches/6.4@58659 602fd350-edb4-49c9-b593-d223f7449a82

Author: desrosj

docker-compose.yml

@@ -32,7 +32,7 @@ services:
   # The PHP container.
   ##
   php:
-    image: wordpressdevelop/php:${LOCAL_PHP-latest}
+    image: wordpressdevelop/php:${LOCAL_PHP-8.3-fpm}
 
     networks:
       - wpdevnet
@@ -63,7 +63,7 @@ services:
   # The MySQL container.
   ##
   mysql:
-    image: ${LOCAL_DB_TYPE-mysql}:${LOCAL_DB_VERSION-latest}
+    image: ${LOCAL_DB_TYPE-mysql}:${LOCAL_DB_VERSION-8.0}
 
     networks:
       - wpdevnet
@@ -91,7 +91,7 @@ services:
   # The WP CLI container.
   ##
   cli:
-    image: wordpressdevelop/cli:${LOCAL_PHP-latest}
+    image: wordpressdevelop/cli:${LOCAL_PHP-8.3-fpm}
 
     networks:
       - wpdevnet