[RELEASE] Prepare for version ''3.0.20'' (#615)

* [RELEASE] Prepare for version ''3.0.20''

* [BUGFIX] Add allow-plugins

Author: MattiasNilsson

composer.json

@@ -52,6 +52,10 @@
 		"bin-dir": ".build/bin",
 		"preferred-install": {
 			"typo3/cms": "source"
+		},
+		"allow-plugins": {
+			"typo3/class-alias-loader": true,
+			"typo3/cms-composer-installers": true
 		}
 	},
 	"scripts": {

ext_emconf.php

@@ -9,7 +9,7 @@
     'author' => 'TYPO3 Community',
     'author_email' => 'typo3cms@typo3.org',
     'author_company' => '',
-    'version' => '3.0.19',
+    'version' => '3.0.20',
     'constraints' => [
         'depends' => [
             'typo3' => '11.5.0-11.5.99',