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, 107 insertions, 0 deletions

diff --git a/vendor/chillerlan/php-settings-container/.github/workflows/tests.yml b/vendor/chillerlan/php-settings-container/.github/workflows/tests.yml
new file mode 100644
index 000000000..e52681849
--- /dev/null
+++ b/vendor/chillerlan/php-settings-container/.github/workflows/tests.yml
@@ -0,0 +1,107 @@
+# https://help.github.com/en/categories/automating-your-workflow-with-github-actions
+# https://github.com/sebastianbergmann/phpunit/blob/master/.github/workflows/ci.yml
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+
+name: "CI"
+
+jobs:
+
+  static-code-analysis:
+    name: "Static Code Analysis"
+
+    runs-on: ubuntu-latest
+
+    env:
+      PHAN_ALLOW_XDEBUG: 0
+      PHAN_DISABLE_XDEBUG_WARN: 1
+
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v2
+
+      - name: "Install PHP"
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "7.4"
+          tools: pecl
+          coverage: none
+          extensions: ast, json
+
+      - name: "Update dependencies with composer"
+        run: composer update --no-interaction --no-ansi --no-progress --no-suggest
+
+      - name: "Run phan"
+        run: php vendor/bin/phan
+
+  build-docs:
+    name: "Build and publish Docs"
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: "Checkout sources"
+        uses: actions/checkout@v2
+
+      - name: "Install PHP"
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: "7.4"
+          coverage: none
+          tools: phpDocumentor
+          extensions: json
+
+      - name: "Build Docs"
+        run: phpdoc --config=phpdoc.xml
+
+      - name: "Publish Docs to gh-pages"
+        uses: JamesIves/[email protected]
+        with:
+          branch: gh-pages
+          folder: docs
+          clean: true
+
+  tests:
+    name: "Unit Tests"
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os:
+          - ubuntu-latest
+          - windows-latest
+        php-version:
+          - "7.4"
+          - "8.0"
+          - "8.1"
+
+    steps:
+      - name: "Checkout"
+        uses: actions/checkout@v2
+
+      - name: "Install PHP with extensions"
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: ${{ matrix.php-version }}
+          coverage: pcov
+          extensions: json
+
+      - name: "Install dependencies with composer"
+        run: composer update --no-ansi --no-interaction --no-progress --no-suggest
+
+      - name: "Run tests with phpunit"
+        run: php vendor/phpunit/phpunit/phpunit --configuration=phpunit.xml
+
+      - name: "Send code coverage report to Codecov.io"
+        uses: codecov/codecov-action@v1
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}