Drop support for Symfony 2.8

Author: alexander-schranz

.github/workflows/test-application.yaml

@@ -19,7 +19,7 @@ jobs:
                     - php-version: '7.4'
                       elasticsearch-version: '5.6.14'
                       lint: true
-                      symfony-version: '^2.8'
+                      symfony-version: '^3.4'
                       elasticsearch-package-constraint: '^5.0'
 
                     - php-version: '7.4'

composer.json

@@ -16,11 +16,11 @@
     ],
     "require": {
         "php": "^7.4|^8.0",
-        "symfony/framework-bundle": "^2.8|^3.0|^4|^5",
-        "symfony/console": "^2.8|^3.0|^4|^5",
-        "symfony/stopwatch": "^2.8|^3.0|^4|^5",
-        "symfony/templating": "^2.8|^3.0|^4|^5",
-        "symfony/asset": "^2.8|^3.0|^4|^5",
+        "symfony/framework-bundle": "^3.4|^4.4|^5.4",
+        "symfony/console": "^3.4|^4.4|^5.4",
+        "symfony/stopwatch": "^3.4|^4.4|^5.4",
+        "symfony/templating": "^3.4|^4.4|^5.4",
+        "symfony/asset": "^3.4|^4.4|^5.4",
         "doctrine/annotations": "~1.2",
         "doctrine/inflector": "^1.0 || ^2.0",
         "doctrine/cache": "~1.4",
@@ -31,15 +31,15 @@
     "require-dev": {
         "mikey179/vfsstream": "~1.4",
         "squizlabs/php_codesniffer": "^2.0|^3.0",
-        "symfony/browser-kit" : "^2.8|^3.4|^4|^5",
-        "symfony/expression-language" : "^2.8|^3.4|^4|^5",
-        "symfony/twig-bundle": "^2.8|^3.4|^4|^5",
-        "symfony/serializer": "^2.8|^3.4|^4|^5",
-        "symfony/yaml": "^2.8|^3.4|^4|^5",
-        "symfony/phpunit-bridge": "^5.1",
-        "symfony/dependency-injection": "^2.8|^3.4|^4|^5",
-        "symfony/validator": "^2.8|^3.4|^4|^5",
-        "symfony/options-resolver": "^2.8|^3.4|^4|^5"
+        "symfony/browser-kit" : "^3.4|^4.4|^5.4",
+        "symfony/expression-language" : "^3.4|^4.4|^5.4",
+        "symfony/twig-bundle": "^3.4|^4.4|^5.4",
+        "symfony/serializer": "^3.4|^4.4|^5.4",
+        "symfony/yaml": "^3.4|^4.4|^5.4",
+        "symfony/phpunit-bridge": "^5.4",
+        "symfony/dependency-injection": "^3.4|^4.4|^5.4",
+        "symfony/validator": "^3.4|^4.4|^5.4",
+        "symfony/options-resolver": "^3.4|^4.4|^5.4"
     },
     "autoload": {
         "psr-4": { "ONGR\\ElasticsearchBundle\\": "" },