composer.json - Update scssphp and related libraries (for PHP 8.1)

composer.json - Update scssphp and related libraries (for PHP 8.1)

Overview
--------

Update scssphp/scssphp, civicrm/composer-compile-plugin, and civicrm/composer-compile-lib.

Before
-------

Large number of warnings are generated in scssphp / php81, leading to an overflow

```
Compiling additional files (For full details, use verbose "-v" mode.)
Compile: Generate CCL wrapper functions
Compile: Greenwich CSS (dist/bootstrap3.css)

Fatal error: Allowed memory size of 1610612736 bytes exhausted (tried to allocate 36864 bytes) in phar:///Users/totten/bknix/bin/composer/vendor/symfony/process/Pipes/UnixPipes.php on line 132

Check https://getcomposer.org/doc/articles/troubleshooting.md#memory-limit-errors for more info on how to handle out of memory errors.Subcommand @composer compile  returned with error code 255

In ComposerPassthru.php line 72:

  Subcommand @composer compile  returned with error code 255

install [--prefer-source] [--prefer-dist] [--prefer-install PREFER-INSTALL] [--dry-run] [--dev] [--no-suggest] [--no-dev] [--no-autoloader] [--no-progress] [--no-install] [--audit] [--audit-format AUDIT-FORMAT] [-v|vv|vvv|--verbose] [-o|--optimize-autoloader] [-a|--classmap-authoritative] [--apcu-autoloader] [--apcu-autoloader-prefix APCU-AUTOLOADER-PREFIX] [--ignore-platform-req IGNORE-PLATFORM-REQ] [--ignore-platform-reqs] [--] [<packages>...]
```

After
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Compilation works

Comments
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Generated via: `composer update civicrm/composer-compile-lib scssphp/scssphp civicrm/composer-compile-plugin`