Update prettier version in template installation docs

This is now the version used as standard in all Arduino Tooling projects, which the "template" is intended to be used
with.

Author: per1234

workflow-templates/check-prettier-formatting-task.md

@@ -57,7 +57,7 @@ Commit the resulting changes to the `go.mod` and `go.sum` files.
 Add the dependencies by running this command:
 
 ```text
-npm install --save-dev prettier@^3.5.3
+npm install --save-dev prettier@^3.6.2
 ```
 
 Commit the resulting changes to the `package.json` and `package-lock.json` files.