OXDEV-7248 Update GHA workflow

Author: hkreuter

.github/oxid-esales/graphql-base.yaml

@@ -20,6 +20,18 @@ install:
     transform: ''
   custom_script_container: |
     perl -pi -e 'print "SetEnvIf Authorization \"(.*)\" HTTP_AUTHORIZATION=\$1\n\n" if $. == 1' source/.htaccess
+
+    perl -pi -e '
+    BEGIN {
+        $inserted = 0;
+        $autoload_dev = qq(  "autoload-dev": {\n    "psr-4": {\n      "OxidEsales\\\\EshopCommunity\\\\Tests\\\\": "./vendor/oxid-esales/oxideshop-ce/tests"\n    }\n  },\n);
+    }
+    if (!$inserted && $_ =~ /"repositories":/) {
+        $_ = $autoload_dev . $_;
+        $inserted = 1;
+    }  ' composer.json
+    composer dump-autoload
+
     vendor/bin/oe-console oe:module:install /var/www
     vendor/bin/oe-console oe:theme:activate apex
     vendor/bin/oe-console oe:module:activate oe_graphql_base