Require PHP 7.4 as minimum version. Drop 7.3 support

Author: jbtronics

.github/workflows/tests.yml

@@ -18,7 +18,7 @@ jobs:
 
     strategy:
       matrix:
-        php-versions: [ '7.3', '7.4', '8.0', '8.1' ]
+        php-versions: [ '7.4', '8.0', '8.1' ]
         db-type: [ 'mysql', 'sqlite' ]
 
     env:

README.md

@@ -3,7 +3,7 @@
 ![Static analysis](https://github.com/Part-DB/Part-DB-symfony/workflows/Static%20analysis/badge.svg)
 [![codecov](https://codecov.io/gh/Part-DB/Part-DB-symfony/branch/master/graph/badge.svg)](https://codecov.io/gh/Part-DB/Part-DB-symfony)
 ![GitHub License](https://img.shields.io/github/license/Part-DB/Part-DB-symfony)
-![PHP Version](https://img.shields.io/badge/PHP-%3E%3D%207.3-green)
+![PHP Version](https://img.shields.io/badge/PHP-%3E%3D%207.4-green)
 
 ![Docker Pulls](https://img.shields.io/docker/pulls/jbtronics/part-db1)
 ![Docker Build Status](https://github.com/Part-DB/Part-DB-symfony/workflows/Docker%20Image%20Build/badge.svg)
@@ -55,7 +55,7 @@ Part-DB is also used by small companies and universities for managing their inve
 
 ## Requirements
  * A **web server** (like Apache2 or nginx) that is capable of running [Symfony 5](https://symfony.com/doc/current/reference/requirements.html),
- this includes a minimum PHP version of **PHP 7.3**
+ this includes a minimum PHP version of **PHP 7.4**
  * A **MySQL** (at least 5.6.5) /**MariaDB** (at least 10.0.1) database server if you do not want to use SQLite.
  * Shell access to your server is highly suggested!
  * For building the client side assets **yarn** and **nodejs** is needed.

composer.json

@@ -2,7 +2,7 @@
     "type": "project",
     "license": "AGPL-3.0-or-later",
     "require": {
-        "php": "^7.3 || ^8.0",
+        "php": "^7.4 || ^8.0",
         "ext-ctype": "*",
         "ext-gd": "*",
         "ext-iconv": "*",
@@ -101,7 +101,7 @@
             "*": "dist"
         },
         "platform": {
-            "php": "7.3.0"
+            "php": "7.4.0"
         },
         "sort-packages": true,
         "allow-plugins": {