Fix tests PHP `8.1`, `8.2`, `8.3`.

[terabytesoftw]

PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 375
PHP Deprecated:  strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 338
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 350
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 375
PHP Deprecated:  strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 338
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 350
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 375
PHP Deprecated:  strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 338
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 350
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 375
PHP Deprecated:  strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 338
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 350
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 375
PHP Deprecated:  strpos(): Passing null to parameter #1 ($haystack) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 338
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 350
PHP Deprecated:  rawurlencode(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/src/OAuth1.php on line 375
PHP Deprecated:  trim(): Passing null to parameter #1 ($string) of type string is deprecated in /home/runner/work/yii2-authclient/yii2-authclient/vendor/yiisoft/yii2/web/UrlManager.php on line 4[16](https://github.com/yiisoft/yii2-authclient/actions/runs/6357266711/job/17268159083?pr=379#step:9:17)

https://github.com/yiisoft/yii2-authclient/actions/runs/6357266711/job/17268159083?pr=379

[g41797]

i just started to learn php - very impressive programming language
looks like good first issue
is it urgent?

[lnghost]

Is it possible to fix it?

[g41797]

i hope it was already fixed by #383