Drop PHP 7.3 support

Author: mvorisek

.github/workflows/test-unit.yml

@@ -15,7 +15,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        php: ['7.3', '7.4', '8.0', '8.1', '8.2', '8.3', 'latest']
+        php: ['7.4', '8.0', '8.1', '8.2', '8.3', 'latest']
         type: ['Phpunit']
         include:
           - php: 'latest'

.php-cs-fixer.dist.php

@@ -14,8 +14,8 @@
     ->setRules([
         '@PhpCsFixer' => true,
         '@PhpCsFixer:risky' => true,
-        '@PHP71Migration' => true,
-        '@PHP71Migration:risky' => true,
+        '@PHP74Migration' => true,
+        '@PHP74Migration:risky' => true,
 
         // required by PSR-12
         'concat_space' => [

.travis.yml

@@ -5,7 +5,6 @@ cache:
     - $HOME/.composer/cache
 
 php:
-  - 7.3
   - 7.4
   - nightly
 

README.md

@@ -19,7 +19,7 @@ php-lock/lock follows semantic versioning. Read more on [semver.org][1].
 
 ## Requirements
 
- - PHP 7.3 or above
+ - PHP 7.4 - 8.3
  - Optionally [nrk/predis][2] to use the Predis locks.
  - Optionally the [php-pcntl][3] extension to enable locking with `flock()`
    without busy waiting in CLI scripts.

composer.json

@@ -34,7 +34,7 @@
     ],
     "homepage": "https://github.com/malkusch/lock",
     "require": {
-        "php": ">=7.3 <8.4",
+        "php": ">=7.4 <8.4",
         "psr/log": "^1.0 || ^2.0 || ^3.0"
     },
     "require-dev": {