Drop PHP 7.0 as well, since it doesn't support the void typehint

Author: stevegrunwell

.github/workflows/unit-tests.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        php-version: ['7.0', '7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
+        php-version: ['7.1', '7.2', '7.3', '7.4', '8.0', '8.1', '8.2', '8.3', '8.4']
     steps:
       - name: Checkout
         uses: actions/checkout@v4

.phpcs.xml.dist

@@ -20,5 +20,5 @@
 
     <!-- Ensure we're compatible with PHP 5.6+ -->
     <rule ref="PHPCompatibility"/>
-    <config name="testVersion" value="5.6-"/>
+    <config name="testVersion" value="7.1-"/>
 </ruleset>

composer.json

@@ -15,9 +15,9 @@
         "source": "https://github.com/stevegrunwell/phpunit-markup-assertions/"
     },
     "require": {
-        "php": "^7.0 || ^8.0",
-        "symfony/css-selector": "^3.4|^4.4|^5.4|^6.0",
-        "symfony/dom-crawler": "^3.4|^4.4|^5.4|^6.0"
+        "php": "^7.1 || ^8.0",
+        "symfony/css-selector": "^4.4|^5.4|^6.0",
+        "symfony/dom-crawler": "^4.4|^5.4|^6.0"
     },
     "require-dev": {
         "dealerdirect/phpcodesniffer-composer-installer": "^1.0",