Fix PressForward requirement typo

Author: mikethicke

composer.json

@@ -69,7 +69,7 @@
     "wpackagist-plugin/multisite-plugin-manager":"^3.1.6",
     "wpackagist-plugin/ninja-forms":"^3.6.16",
     "wpackagist-plugin/participants-database":"^2.1.5",
-    "wpackagist-plugin/pressforward":"5.8.0",
+    "wpackagist-plugin/pressforward":"^5.8.0",
     "wpackagist-plugin/redis-cache":"^2.0.26",
     "wpackagist-plugin/so-widgets-bundle":"^1.36.0",
     "wpackagist-plugin/wordpress-importer":"^0.8",