Update symfony packages to v7

composer.json

@@ -35,12 +35,12 @@
     "shardj/zf1-future": "1.23.*",
     "shardj/zf1-extras-future": "^1.12",
     "solarium/solarium": "^6.3.1",
-    "symfony/event-dispatcher": "^5.4",
+    "symfony/event-dispatcher": "^7.0",
     "symfony/polyfill-php82": "*",
     "symfony/polyfill-php83": "*",
     "symfony/polyfill-mbstring": "*",
-    "symfony/cache": "^5.4",
-    "symfony/filesystem": "^5.4",
+    "symfony/cache": "^7.0",
+    "symfony/filesystem": "^7.0",
     "ezyang/htmlpurifier": "^4.14",
     "cottagelabs/coar-notifications": "^0.9.70",
     "smalot/pdfparser": "^2.2",
@@ -53,8 +53,8 @@
     "league/html-to-markdown": "^5.1",
     "league/commonmark": "^2.4",
     "seboettg/citeproc-php": "^2.6",
-    "symfony/serializer": "^6.4",
-    "symfony/property-access": "^6.4",
+    "symfony/serializer": "^7.0",
+    "symfony/property-access": "^7.0",
     "ramsey/uuid": "^4.7",
     "symfony/polyfill-php84": "^1.30"
   },