Update php-qrcode and php-settings-container for PHP 8.1

By running the following command after updating composer.json

```
composer update chillerlan/php-qrcode chillerlan/php-settings-container
```

This change fixes a deprecation warning from Preferences ->
Personal data / Authentication -> Authenticator (OTP).

```
Return type of chillerlan\Settings\SettingsContainerAbstract::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice
1. vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php(19): ttrss_error_handler(Return type of chillerlan\Settings\SettingsContainerAbstract::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice, vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php)
2. vendor/composer/ClassLoader.php(571): include(/usr/share/webapps/tt-rss/vendor/chillerlan/php-settings-container/src/SettingsContainerAbstract.php)
3. vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile(/usr/share/webapps/tt-rss/vendor/composer/../chillerlan/php-settings-container/src/SettingsContainerAbstract.php)
4. vendor/chillerlan/php-qrcode/src/QROptions.php(59): loadClass(chillerlan\Settings\SettingsContainerAbstract)
5. vendor/composer/ClassLoader.php(571): include(/usr/share/webapps/tt-rss/vendor/chillerlan/php-qrcode/src/QROptions.php)
6. vendor/composer/ClassLoader.php(428): Composer\Autoload\includeFile(/usr/share/webapps/tt-rss/vendor/composer/../chillerlan/php-qrcode/src/QROptions.php)
7. vendor/chillerlan/php-qrcode/src/QRCode.php(113): loadClass(chillerlan\QRCode\QROptions)
8. classes/pref/prefs.php(958): __construct()
9. classes/pref/prefs.php(469): _get_otp_qrcode_img()
10. classes/pref/prefs.php(541): index_auth_2fa()
11. backend.php(136): index_auth()
```

The issue is fixed in php-settings-container 2.1.1 [1] Here I use the
latest php-qrcode version for another PHP 8.1 fix [2].

[1] https://github.com/chillerlan/php-settings-container/commit/68bc5019c8b38956c83906431ef879668366b036#diff-359c7f7a6d32d9935951e1b0742eb116fb654f4a932c8d40328bb5dcab2fa111L162
[2] https://github.com/chillerlan/php-qrcode/issues/97

1 files changed, 1 insertions, 31 deletions

diff --git a/vendor/chillerlan/php-settings-container/src/SettingsContainerInterface.php b/vendor/chillerlan/php-settings-container/src/SettingsContainerInterface.php
index 59cef6232..ddacccd29 100644
--- a/vendor/chillerlan/php-settings-container/src/SettingsContainerInterface.php
+++ b/vendor/chillerlan/php-settings-container/src/SettingsContainerInterface.php
@@ -2,9 +2,7 @@
 /**
  * Interface SettingsContainerInterface
  *
- * @filesource   SettingsContainerInterface.php
  * @created      28.08.2018
- * @package      chillerlan\Settings
  * @author       Smiley <[email protected]>
  * @copyright    2018 Smiley
  * @license      MIT
@@ -22,9 +20,7 @@ interface SettingsContainerInterface extends JsonSerializable{
 	/**
 	 * Retrieve the value of $property
 	 *
-	 * @param string $property
-	 *
-	 * @return mixed
+	 * @return mixed|null
 	 */
 	public function __get(string $property);
 
@@ -33,69 +29,43 @@ interface SettingsContainerInterface extends JsonSerializable{
 	 *
 	 * @param string $property
 	 * @param mixed  $value
-	 *
-	 * @return void
 	 */
 	public function __set(string $property, $value):void;
 
 	/**
 	 * Checks if $property is set (aka. not null), excluding private properties
-	 *
-	 * @param string $property
-	 *
-	 * @return bool
 	 */
 	public function __isset(string $property):bool;
 
 	/**
 	 * Unsets $property while avoiding private and non-existing properties
-	 *
-	 * @param string $property
-	 *
-	 * @return void
 	 */
 	public function __unset(string $property):void;
 
 	/**
 	 * @see SettingsContainerInterface::toJSON()
-	 *
-	 * @return string
 	 */
 	public function __toString():string;
 
 	/**
 	 * Returns an array representation of the settings object
-	 *
-	 * @return array
 	 */
 	public function toArray():array;
 
 	/**
 	 * Sets properties from a given iterable
-	 *
-	 * @param iterable $properties
-	 *
-	 * @return \chillerlan\Settings\SettingsContainerInterface
 	 */
 	public function fromIterable(iterable $properties):SettingsContainerInterface;
 
 	/**
 	 * Returns a JSON representation of the settings object
 	 * @see \json_encode()
-	 *
-	 * @param int|null $jsonOptions
-	 *
-	 * @return string
 	 */
 	public function toJSON(int $jsonOptions = null):string;
 
 	/**
 	 * Sets properties from a given JSON string
 	 *
-	 * @param string $json
-	 *
-	 * @return \chillerlan\Settings\SettingsContainerInterface
-	 *
 	 * @throws \Exception
 	 * @throws \JsonException
 	 */