minor #15988 Change the default NODE_VERSION to 18 (jakubtobiasz)

This PR was merged into the 1.13 branch.

Discussion
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| Q               | A                                                            |
|-----------------|--------------------------------------------------------------|
| Branch?         | `1.13`

From what I see, all our PR-based envs fails since we bumped the min. node version to 18 :p.

Commits
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  Change the default NODE_VERSION to 18

.bunnyshell/docker/php/Dockerfile

@@ -2,7 +2,7 @@
 # https://docs.docker.com/compose/compose-file/#target
 
 ARG PHP_VERSION=8.1
-ARG NODE_VERSION=16
+ARG NODE_VERSION=18
 ARG ALPINE_VERSION=3.15
 ARG COMPOSER_VERSION=2.4
 ARG PHP_EXTENSION_INSTALLER_VERSION=latest