minor #20508 [HttpFoundation] Generate url-safe hashes for signed urls (javiereguiluz)

This PR was merged into the 7.3 branch.

Discussion
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[HttpFoundation] Generate url-safe hashes for signed urls

Fixes #20481.

Commits
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1afb8eb [HttpFoundation] Generate url-safe hashes for signed urls

Author: javiereguiluz

routing.rst

@@ -2802,6 +2802,11 @@ argument of :method:`Symfony\\Component\\HttpFoundation\\UriSigner::sign`::
 
     The feature to add an expiration date for a signed URI was introduced in Symfony 7.1.
 
+.. versionadded:: 7.3
+
+    Starting with Symfony 7.3, signed URI hashes no longer include the ``/`` or
+    ``+`` characters, as these may cause issues with certain clients.
+
 Troubleshooting
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