Switch static-php-cli to support PHP 8.3 and 8.4 only (#615)

* Update spc self to PHP 8.4 only

* Update workflows

* Fix test-extensions, adjust docs order

* Fix cs-fix and phpunit

* Add PHP_CS_FIXER_IGNORE_ENV

* Add compatibility for PHP 8.3

* Change version description in README, adjust composer.json PHP version limit

* Switch PHP to 8.4 in spc-alpine-docker

* Add deprecation notice

.github/workflows/tests.yml

@@ -34,13 +34,13 @@ jobs:
       - name: "Setup PHP"
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.1'
+          php-version: '8.4'
           extensions: curl, openssl, mbstring
           ini-values: memory_limit=-1
           tools: pecl, composer, php-cs-fixer
 
       - name: Run PHP-CS-Fixer fix
-        run: php-cs-fixer fix --dry-run --diff --ansi
+        run: PHP_CS_FIXER_IGNORE_ENV=1 php-cs-fixer fix --dry-run --diff --ansi
 
   phpstan:
     runs-on: ubuntu-latest
@@ -52,7 +52,7 @@ jobs:
       - name: "Setup PHP"
         uses: shivammathur/setup-php@v2
         with:
-          php-version: '8.1'
+          php-version: '8.4'
           extensions: curl, openssl, mbstring
           ini-values: memory_limit=-1
           tools: composer
@@ -79,9 +79,6 @@ jobs:
     strategy:
       matrix:
         include:
-          - php: '8.1'
-          - php: '8.2'
-          - php: '8.3'
           - php: '8.4'
 
     steps:
@@ -125,7 +122,7 @@ jobs:
       - name: "Setup PHP"
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.2
+          php-version: 8.4
 
       - name: Define
         id: gendef
@@ -153,7 +150,7 @@ jobs:
       - name: "Setup PHP"
         uses: shivammathur/setup-php@v2
         with:
-          php-version: 8.2
+          php-version: 8.4
           tools: pecl, composer
           extensions: curl, openssl, mbstring
           ini-values: memory_limit=-1