[Site] upgrade to Symfony 6.4 stable

[kbond]

Q	A
Bug fix?	no
New feature?	no
Issues	n/a
License	MIT

[kbond]

I was not able to update the asset-mapper recipe:

The original recipe version you have installed could not be found, it may be too old.
Update the recipe by re-installing the latest version with:
  composer recipes:install symfony/asset-mapper --force -v

When I run composer recipes:install symfony/asset-mapper --force -v:

Executing script importmap:require
Executed script importmap:require  [OK]
Executing script importmap:require
Executed script importmap:require  [OK]
Executing script importmap:require
Executed script importmap:require  [OK]
Executing script importmap:require
Executed script importmap:require  [OK]
(repeated forever?)

Edit, fixed, it was not repeated forever - I think one for each importmap entry?

[weaverryan]

Thanks Kevin!