chore: update CodeIgniter to 4.5.1 + other dependencies to latest

.devcontainer/Dockerfile

.devcontainer/docker-compose.yml

.gitignore

app/.htaccess

app/Config/App.php

app/Config/Autoload.php

app/Config/Boot/production.php

app/Config/Cache.php

app/Config/ContentSecurityPolicy.php

app/Config/Cors.php

app/Config/Database.php

app/Config/Exceptions.php

app/Config/Feature.php

app/Config/Filters.php

app/Config/Format.php

app/Config/Generators.php

app/Config/Kint.php

app/Config/Logger.php

app/Config/Mimes.php

app/Config/Optimize.php