[BUG][php-slim4] api-key authentication throws exception

[PhotoKevin]

Bug Report Checklist

• [X ] Have you provided a full/minimal spec to reproduce the issue?
• Have you validated the input using an OpenAPI validator?
• [X ] Have you tested with the latest master to confirm the issue still exists?
• Have you searched for related issues/PRs?
• What's the actual output vs expected output?
• [Optional] Sponsorship to speed up the bug fix or feature request (example)

Description

When using security APIKeyHeader with generator php-slim4 the resulting code throws an exception. (my domains removed for privacy)

Fatal error: Uncaught InvalidArgumentException: Authenticator option has not been setted. in ****/vendor/dyorg/slim-token-authentication/src/TokenAuthentication.php:52
Stack trace: 
#0 ****/lib/App/RegisterRoutes.php(510): Dyorg\TokenAuthentication->__construct(Array)
#1 ****/public/index.php(79): OpenAPIServer\App\RegisterRoutes->__invoke(Object(Slim\App))
#2 {main} thrown in ****/vendor/dyorg/slim-token-authentication/src/TokenAuthentication.php on line 52

openapi-generator version

This occurs with 7.15.0

OpenAPI declaration file content or url

Modify the petstore.json to include:

                "security": [
                    {
                        "APIKeyHeader": []
                    }
                ],

Generation Details

java -jar gen\openapi-generator-cli-7.14.0.jar generate -i petstore.json -g php-slim4 --skip-validate-spec -o ./petstore

Steps to reproduce

curl -X GET "https://yourhost.com/api/pet -H "X-API-Key: mykey" --output pet.json

Related issues/PRs

No related issues that I can find

Suggest a fix

The problem lies in php-slim4-server\register_routes.mustache

                    if ($authMethod['isApiKey']) {
                        $authenticatorConfig = [
                            'path' => '/',
                            'authenticator' => new ApiKeyAuthenticator,
                            'regex' => '/\s+(.*)$/i',
                            'argument' => null,
                            'attribute' => 'authorization_token',
                            'error' => ['{{authPackage}}\ApiKeyAuthenticator', 'handleUnauthorized'],
                        ];
                        if ($authMethod['isKeyInHeader']) {
                            $authenticatorConfig = [
                                'header' => $authMethod['keyParamName'],
                                'parameter' => null,
                                'cookie' => null,
                            ];

The seconds (and some subsequent) assignment of $authenticatorConfig should be a += so that the additional values are added to the configuration instead of replacing them.

Secondarily, the regex has \s+ which requires the key to begin with whitespace. Since headers generally have their whitespace automatically trimmed, this ought to be changed to \s*. I suspect the 'isBearer' and 'OAuth' regular expressions also ought to be changed.