Merge branch 'upgrade-fontawesome-v5-to-v6' into 'main'

docs/40_Navigation.md

docs/60_Components/Infobox.md

docs/60_Components/Smallbox.md

public_html/classes/render-adminlte.class.php

public_html/config/navi_left.php

public_html/config/navi_left.php.dist

public_html/config/navi_top.php

public_html/config/navi_top.php.dist

public_html/config/page.tpl.php

public_html/config/page.tpl.php.dist

public_html/example.php

public_html/index.php

public_html/pages/error_404.php

...tml/vendor/admin-lte-plugins/fontawesome-free/css/all.css

...vendor/admin-lte-plugins/fontawesome-free/css/all.min.css

.../vendor/admin-lte-plugins/fontawesome-free/css/brands.css

...dor/admin-lte-plugins/fontawesome-free/css/brands.min.css

...or/admin-lte-plugins/fontawesome-free/css/fontawesome.css

...dmin-lte-plugins/fontawesome-free/css/fontawesome.min.css

...vendor/admin-lte-plugins/fontawesome-free/css/regular.css